Thom Bates
12-12-2006, 05:36 PM
HOT STREET
NMRA SERIES 2007 RULES
Preliminary Version 1.0
Class Overview
Hot Street is designed for small block naturally aspirated 1955 and newer Ford bodied and Ford powered vehicles. Hot Street entries are limited to 302, 351 and 4.6L/5.4L modular engine types. Maximum of 480 cubic inches. Hot Street racing will be conducted at all drag racing events (see race schedule).
Qualifying Information, Ladder & Tree Type,
All Run, NHRA Sportsman Ladder, Pro .400 tree, Heads-Up.
Accepted Products Deadline: NMRA will accept requests from manufacturers to have new products considered for addition to 2006 accepted lists only up until January 1, 2007. After this date, NMRA will consider manufacturer requests for new products for the 2008 season.
Weight Breaks:
BASE CI BASE WEIGHT
327 2650
360 2850
400 3050
440 3250
Maximum Cubic Inches: 480
2-speed OEM Powerglide transmission may deduct 25-lbs.
4.6L/5.4L Modular Engines may deduct 300 lbs.
1950 – 1974 body styles – deduct 50 lbs’s from base weights
Manual transmission – weight penalty of 200-lbs’s added to base weights. See section 2.12
Standard Valve Angle/Port location Windsor-type Heads – deduct 150 lbs from base weights.
TFS “R” Cylinder Heads – deduct 75 lbs from base weights.
Stock type rear suspensions – deduct 50 lbs’s from base weights
Note: 8.5 lbs/cu in penalty applies for cubic inches over weight break limit. Ex: Small block 368 cubic inch engine is 2968.
Note: All weights are with driver & rounded down to the five pound increment. Ex: A calculated weight of 2968 would be required to weight 2965 with driver at scales.
Class Rules, HOT STREET
1: ENGINE
1.1 COOLING SYSTEM
RADIATOR: OEM production-style or aftermarket radiator is required and must be mounted in stock location. Stock core support is required.
Water pump: Any aftermarket (belt drive or electric drive) pump permitted.
COOLING FANS: Any permitted.
1.2 Engine
ENGINE: Engine limited to 302, 351, and 4.6L/5.4L modular engine types. Engine swapping permitted during event.
1.2a) ENGINE DRIVE BELT SYSTEM: Any permitted.
1.3 Exhaust
EXHAUST: All entries allowed to use tubular headers. Adapter plates permitted to bolt headers to cylinder head. Exhaust must be directed out of car body, away from driver and fuel tank. All exhaust gases released from engine must pass through complete exhaust system.
1.3a) HEADERS & COLLECTORS: Any headers and/or collectors permitted.
1.3b) EXHAUST TUBING/SIZE: Any tubing size permitted.
1.3c) TAILPIPE & EXHAUST RULES: Not required.
1.3d) MUFFLER REQUIREMENTS: Commercially available(generally available through retail locations) mufflers are required.
A maximum of two (2) mufflers is allowed. A maximum of one (1) inlet and one (1) outlet is permitted.
1.5 FUEL-DELIVERY SYSTEM
DELIVERY SYSTEM: Electric or mechanical fuel pumps permitted. Pressure regulators, and any line size permitted. All fuel lines must originate and return to a single, non-segmented, fuel cell or OEM fuel tank. Fuel pump must shut off with a master electrical switch. Any method of artificially heating or cooling fuel prohibited (cool cans, ice, wet rags, Freon, etc.). A valve for removal of fuel (gasoline) during technical inspections is mandatory. Valve must be installed between carburetor/injection and regulator, and should be installed in such a manner that allows a cup to be placed to catch fuel removed from the line. Exit of valve should be capped or plugged in addition to being closed for added safety.
Aftermarket/fabricated fuel tank or cell permitted. Must be located outside driver’s compartment and inside body lines. If tank or fuel filler is inside trunk, a bulkhead of minimum .032-inch aluminum or .024-inch steel must be used between trunk and driver compartment, and tank must be vented to outside of car. When used, fuel cells must have a metal box protecting the part of the fuel cell that is outside the trunk floor. Non-metallic fuel cells or tanks must be grounded to frame. See NHRA General Regulations Section 1.5.
1.6 GASOLINE
GASOLINE: Gasoline as outlined here is the only acceptable fuel for use in this eliminator for the specified combinations (See Section 13). The NMRA Racing Association reserves the right to check gasoline at any time during competition.
1.6a) SPEC FUEL: This class requires the use of one of the allowable spec fuels in this class. Mixing of fuels prohibited. Failure to pass fuel check is grounds for disallowance of the run during qualifying and disqualification from the event during eliminations. Fuel must pass color, fuel meter, specific gravity, chemical testing, and/or any other check as required by NMRA Technical Department.
1.9 NITROUS OXIDE
NITROUS OXIDE: Prohibited.
1.10 OIL SYSTEM
OILING SYSTEM: Wet sump oiling system required. Dry sump oiling systems prohibited. External oil pumps permitted. Any vacuum pump and/or evacuator system (header, or otherwise) permitted. Any oil pan permitted.
1.12 SUPERCHARGER
SUPERCHARGER: Prohibited.
1.15 BLOCK
Block: Any Ford type 302/351 or 4.6L/5.4L based engine block permitted. Block must maintain Ford O.E.M. bore spacing, deck heights (8.2, 8.7, 9.2, or 9.5 required), and crankshaft spacing for engine type used. Deck spacers (extensions) prohibited.
1.16 ENGINE LOCATION/MOUNTS
Engine Location: Engine location may be altered from stock, however no part of engine or heads may contact firewall. Engine plates and solid engine mounts permitted.
1.17 HEADS
GENERAL GUIDELINES:
302/351 Type Heads: Only commercially available cast aluminum or cast iron, two-valve per cylinder heads permitted. Billet, one-off, custom and/or fabricated heads prohibited. Cylinder heads must be overhead valve single spark plug per cylinder design. 4.6/5.4 type Heads: Only commercially available cast aluminum or cast iron, cylinder heads permitted. Billet, one-off, custom and/or fabricated heads prohibited. Cylinder head must be single spark plug per cylinder design. 1.17a) HEADS, PERMITTED: Only original manufacture, generally available heads, accepted by NMRA, permitted. External modifications prohibited in port area. Spark plug placement and depth must remain stock. Billet, one-off, custom and/or fabricated heads prohibited. 1.17b) HEADS, MASS PRODUCED: Only mass produced, commercially available, NMRA accepted, cast aluminum or iron Ford cylinder heads permitted. Low volume, one off, aluminum cylinder heads prohibited.
1.17c) HEADS, BOLT PATTERN: Class is permitted standard bolt-pattern only for cylinder heads.
Maximum of 10 head fasteners per side in Ford O.E.M. location.
1.17d) HEADS, PORTING: Permitted.
1.17e) HEADS, WELDING/EPOXY: Prohibited.
1.17f) HEADS, VALVES: Any valve permitted. Bronze lined or replacement guides permitted.
1.17g) HEADS, MILLING: Permitted. Cylinder heads must maintain original production valve angles + or – 2 degrees
1.17h) HEADS, PUSHROD SLEEVES: Permitted, however the use of welding or epoxy to secure sleeves prohibited. Cylinder head may be cut for larger push rods.
1.17i) HEADS, COMBUSTION CHAMBER VOLUME: No regulations limiting combustion chamber volume.
1.17j) HEADS, PORT PLATES/ADAPTER PLATES: Intake port plates prohibited, exhaust port plates maximum thickness .500-inch permitted.
1.17k) VALVE JOB: Any valve job permitted.
1.17l) Permitted Cylinder Head List, Parts Number: These are the only permitted cylinder heads and part numbers for competition in this category. If your cylinder head is not on this list, it is prohibited.
§ Ford OEM 5.0/289/302/351 Windsor Cast Iron Cylinder Heads**
§ Ford OEM 4.6/5.4L 2V/4V Cylinder Heads
§ Ford GT-40/GT-40P**
§ FRPP J302, N351, V351, X303, Y303, Z304 Cast Iron Heads**
§ FRPP 4.6 2V & 4V Cylinder Heads
§ Edelbrock Performer & Performer RPM, PN# 60329, 60359, 60279, 60229, 60259, 60269**
§ Edelbrock Victor Jr. PN# 77169,77179,77189,77389,77399,61269,61279**
Edelbrock 18-Degree Victor Jr. CNC 2.5-inch exhaust pattern, PN # 1-61309**§ Edelbrock Victor & Glidden PN# 77219,77289, 77299,77099, 61099, 61299
§ Trick Flow Twisted Wedge Std & Track Heat Aluminum Cylinder Heads**
§ Trick Flow Twisted Wedge “R” ##
§ Trick Flow Specialties “Street Heat” Aluminum & Cast Iron**
§ Brodix ST 5.0, PN# ST 5.0, ST 5.0R**
§ Brodix Track 1, Track 1X, Cylinder Heads**
§ Holley 5.0, PN# 300-573, 574, 575, 576, 577, 578, 579**
§ World Products Roush 180 & Windsor Jr, PN# 53030, 23030**
§ World Products Roush 200 & Windsor Sr, PN# 53040**
§ Air Flow Research 165, 185, 205, & 225 heads**
§ Canfield PN# 18-350, 20-450, & 20-475**
§ Dart Pro 1 As Cast & CNC 170cc, 195cc, 210cc, & 225cc**
§ RHS 180cc, 200cc & 215cc (Iron & Alum)
## these cylinder heads permitted 75-lb weight deduction.
** these cylinder heads part #’s maintain Ford OEM stock-valve angle, intake port location, and/or near stock exhaust port location and bolt pattern, or a combination of, during initial production and will be permitted 150-lb weight deduction.
Note: Stock factory OEM heads are those cylinder heads that are factory production line installed on production vehicles as recognized by NHRA.
1.17m) INTAKE PORT LOCATION: Bottom of intake port may not be greater (farther) than .960-inch from head mounting surface. Purposeful erratic machining of the port floor to bypass this rule will be grounds for disqualification from event.
1.17n) INTAKE PORT HEIGHT: Maximum port height is 2.40-inch as measured at intake manifold mounting surface.
1.18 VALVETRAIN
1.18a) CAMSHAFT: Any permitted.
1.18b) LIFTERS: Any permitted.
1.18c) LIFTER BORES: Lifter bores permitted to be bushed.
1.18d) VALVE LOCK: Any permitted.
1.18e) RETAINERS: Any permitted.
1.18f) ROCKER ARMS: Any permitted.
1.18g) CAMSHAFT DRIVE SYSTEM: Any permitted.
1.18h) REV KITS: Any permitted.
1.18j) PUSHRODS: Steel is only accepted material. Composite pushrods prohibited.
1.19 CARBURETORS
CARBURETORS: Single Holley 4150 style permitted on all combinations. Split carburetors prohibited (example: a Carburetor split and offset into two two-barrels). Maximum throttle bore size – 1.775-inch. Maximum venturi size – 1.587-inch. Only standard 4150-style boosters are permitted.
1.19a) CARBURETOR MODIFICATIONS: Any permitted.
1.20 FUEL INJECTION
Fuel Injection, PUSHROD BASED APPLICATIONS: Fuel injection must be electronic. Single throttle body required, maximum throttle body size 90mm (3.543-inch). EFI 4 hole 4150 type throttle bodies are permitted on carb style intakes, maximum throttle body size 1.750-inch.
Fuel Injection, MODULAR ENGINE APPLICATIONS: Fuel injection must be electronic. Single or dual throttle body required.
1.20a) MASS AIR SIZE & TYPE PERMITTED: Any permitted.
1.20b) FUEL INJECTOR SIZES & TYPES: Any size/type fuel injector permitted. Maximum of 8 fuel injectors located in stock location.
1.21 INTAKE MANIFOLD
INTAKE MANIFOLD: Accepted, commercially available, mass-produced cast lower intake manifolds required. Fabricated and/or sheet-metal or carbon fiber intake manifolds prohibited, with the exception of EFI upper intake manifolds & 4.6L/5.4L intakes. Spacers permitted between EFI upper and lower intakes (any height). Carb spacers permitted. Maximum 2.200-inch total thickness, including sandwiched gaskets. Maximum of one intake gasket (max. thickness 1/8-inch) between each mating surface. Spacers prohibited between intake manifold and cylinder heads.
1.21a) PORTING: Permitted.
1.21b) WELDING/EPOXY: OEM 4.6/5.4L intakes may be welded/epoxied. EFI lower intake manifolds may have minor epoxy/weld added to the exterior of the intake runners only. All other applications: Prohibited.
1.21c) PERMITTED INTAKE MANIFOLD LIST, PART NUMBERS: These are the only permitted intakes and part numbers for competition in this category. If your part number is not on this list consider it prohibited.
§ Stock Ford OEM 4.6L/5.4L/5.0L Intake Manifolds
§ Ford/FRPP GT-40 & Cobra Lower, Truck/Saleen/Vortech
§ Ford/FRPP 4.6L M-9424-T46
§ 4.6L/5.4L Sheet metal/Fabricated Intake (any model)
§ Reicard Racing 2 Valve EFI 4.6L Sheet Metal Manifold
§ TFS “R” Lower Intake
§ Edelbrock Victor 5.0 & Victor 351 EFI
§ Edelbrock Victor Jr. Carb Intake 8.2, 8.7, 9.2,. 9.5 Deck
§ Edelbrock Performer RPM II #7123 - Upper & Lower
§ Edelbrock Super Victor Carb & EFI Intakes 8.2, 8.7, 9.2., 9.5 Deck
§ Holley SysteMax Intake (lower)
§ Parker Funnel Web Intake – 8.2 deck 302 only
§ Canfield Small Block Ford Intake Manifold, 8.2 or 8.7 deck
§ Sullivan Modular 4.6LL & 5.4 Intake Manifolds PN# 1-100a, 1-100b, 1-100c,1-100d
1.22 SOLENOIDS
SOLENOIDS: Not applicable.
1.23 TURBOCHARGERS
TURBOCHARGER: Prohibited.
1.24 AFTERCOOLER/INTERCOOLER
AFTERCOOLER/INTERCOOLER: Prohibited.
1.24a) AFTERCOOLER/INTERCOOLER LOCATION: Not applicable.
1.25 POWER ADDERS
POWER ADDERS: Prohibited. Water injection is prohibited.
1.26 CRANKSHAFT
CRANKSHAFT: Cast iron or steel crankshaft required. Composite and/or multi-piece crankshafts prohibited.
1.27 CONNECTING RODS
CONNECTING RODS: Any steel, aluminum, or titanium connecting rods required. Composite Connecting rods prohibited.
1.28 HEAD GASKETS & QUENCH AREA
HEAD GASKETS & QUENCH AREA: No restrictions.
1.29 PISTONS, PINS, RINGS
PISTONS, PINS, RINGS: Any piston, pin, ring combination permitted.
1.30 BOOST CONTROLLERS
BOOST CONTROLLERS: Prohibited.
1.31 WASTEGATE & PRESSURE REGULATOR
WASTEGATE & PRESSURE REGULATOR: Prohibited.
1.32 VISIBLE COATINGS
VISIBLE COATINGS: Visible coatings are permitted where lubricants are present. Visible piston coating above the top ring is permitted. Visible coating of cylinder head runners, combustions chambers, and/or intake manifold runners/plenums prohibited. Visible coating of any external surface of cylinder head or intake manifold prohibited, including, but not limited to runners and/or plenums.
1.33 “O” Ringing of block
“O” Ringing of Block: Permitted.
2: Drivetrain
2.3 CLUTCH
CLUTCH: Single disk clutch required.
2.4 DRIVESHAFT
DRIVESHAFT: Driveshaft required to be only steel or only alumium regardless of origin or manufacturer. 2.11 REAREND
REAREND: Any automotive type rearend permitted.
2.12 MANUAL TRANSMISSIONS
MANUAL TRANSMISSIONS: OEM or aftermarket transmissions with a maximum of 5 forward speeds permitted. Clutchless models permitted. Any gear change must occur from direct action by the driver. Pneumatic, electric, hydraulic, etc. shifters prohibited. Vehicles using manual transmission must add 200 pounds to listed base weight (see section 13). Torque converter not permitted with this type of transmission.
2.13 PURPOSE BUILT TRANSMISSIONS
PURPOSE BUILT TRANSMISSIONS: Prohibited.
2.14 AUTOMATIC TRANSMISSIONS
(OEM American transmissions or replicas of OEM American transmissions that use planetary gears)
AUTOMATIC TRANSMISSIONS: The following automatic transmissions with torque converters originally produced by an American automobile manufacturer or replicas of one, are the only permitted automatic transmissions in this class: Ford C4, C6, AOD, AOD-E, 4R70W, & 5R55S and GM Powerglide and Turbo 400. Transmission-to-engine adapters permitted. Trans brakes permitted. Lock-up transmissions/torque converters prohibited in C4, C6, GM Turbo 400, & GM Powerglide. Any gear change must occur as a result of an internal function of the transmission or from direct action by the driver. Pneumatic, electric, hydraulic, etc. shifters prohibited. Automatic entries run at listed base weights. Clutch not permitted with this type of transmission.
3: BRAKES & SUSPENSION
3.1 BRAKES
BRAKES: All cars must have front and rear hydraulic brakes. Automated brakes or any type of traction control is prohibited. Application and release of brakes must be a function of the driver’s foot. Line loc permitted on front wheels only. Any other electric, pneumatic, or hydraulic device in the system is prohibited.
3.2 SHOCK ABSORBERS
shock absorbers: each vehicle in competition must be equipped with one operative shock absorber for each sprung wheel. Shock absorbers may be either hydraulic or friction type, securely mounted and in good working order. Shocks must be stand alone and may not be adjustable during run via electronic and/or other means.
STEERING: Manual or power assisted aftermarket steering system in stock location mandatory.
3.4 Suspension, FRONT 79 & NEWER
FRONT SUSPENSION:
3.4a) K-MEMBERS: Aftermarket K-Members permitted, but must attach to the chassis using only the original eight (8) factory O.E.M. type mounting bolts in the factory mounting location. No part of the K-member may be permanently attached to the chassis. K-member may be modified in oil pan area to allow oil pan enlargement or removal.
3.4b) STRUT TOWER: Factory strut towers required. No modifications may be made to the strut towers except roll bar or roll cage may be welded to the strut towers for safety purposes.
3.4c) CONTROL ARMS: OEM or tubular stock type control arms required which are attached in stock location.
3.4d) SHOCKS/STRUTS: Aftermarket stock-type struts and shocks permitted provided stock attachment location used. Shocks must be stand alone and may not be adjustable during run via electronic and/or other means.
3.4e) SPRINGS: Aftermarket springs permitted.
3.4f) COIL OVERS: Coil over shocks and struts permitted. Stock OEM mounting location required.
3.4g) CAMBER PLATES: Bolt on type camber plates permitted. Bolt on plate may be tack welded to strut tower to prevent movement (2.00-inch max length), otherwise welding prohibited. Camber plate may only be attached to top flat portion of strut tower. Attachment to any other structure prohibited.
3.4h) SPINDLES: Only stock OEM or NMRA accepted, bolt-on, commercially available aftermarket spindles permitted. NMRA accepted spindles are Anthony Jones Engineering, Racecraft, Santhuff, & Strange.
3.4 Suspension, FRONT 78 & OLDER
FRONT SUSPENSION:
NO FRONT WHEEL DRIVE CONVERSIONS PERMITTED IN THIS ELIMINATOR.
3.4a) K-MEMBERS: Aftermarket K-Members permitted. K-member may be modified in oil pan area to allow oil pan enlargement or removal.
3.4b) STRUT TOWER/SHOCK TOWER: OEM strut tower/shock tower may be removed in lieu of installing/using commercially available struts/shocks. All other sections of front suspension rules must be adhered to.
3.4c) CONTROL ARMS: OEM or tubular stock type control arms permitted.
3.4d) SHOCKS/STRUTS: Aftermarket struts and shocks permitted. Shocks must be stand alone and may not be adjustable during run via electronic and/or other means.
3.4e) SPRINGS: Aftermarket springs permitted.
3.4f) COIL OVERS: Coil over shocks and struts permitted.
3.4g) CAMBER PLATES: Bolt on type camber plates permitted.
3.4h) SPINDLES: Accepted, bolt-on, commercially available aftermarket spindles permitted. NMRA accepted spindles are Anthony Jones Engineering, Santhuff, Heidt, & Strange.
3.4 SUSPENSION, REAR
REAR SUSPENSION: Only stock type rear suspension or ladder bar rear suspension permitted.
Stock Type Suspension: Must utilize stock and/or aftermarket direct replacement type suspension components including shocks, springs, (leaf springs may be moved inboard), and/or control arms. To receive stock suspension weight break, shocks and springs must be in stock OEM location.
3.4a) 3-LINK and 4-LINK: Stock or stock-type direct-replacement 3-link and/or 4 links required. All stock type 3 or 4 link suspensions must maintain stock lateral angles and attachment points, but may be moved up or down on rear axle. Retrofitting and/or cross-breeding of 3-link and 4-link components prohibited. Shocks and springs must remain in factory location.
3.4b) LADDER BARS: Welded on ladder bars using fabricated front cross member support permitted. Track locators permitted.
3.4c) REPLACEMENT CONTROL ARMS & LEAF SPRINGS: Replacement upper and lower control arms and leaf springs permitted. Control arms may use any type bushing, bearing, or rod end. Control arms may be adjustable to any length.
3.4d) PANHARD BARS: Permitted. Panhard bar must be located aft of rearend housing. Panhard bar may be welded.
3.4e) SWAY BARS: Aftermarket or factory sway bars permitted. Aftermarket sway bars may be welded to both chassis and rearend housing.
3.4f) TORQUE ARMS: Permitted.
3.4g) REAR SHOCKS & SPRINGS: Any permitted, including coil over shocks and springs. May be relocated. Electronic or adjustable rear shocks are permitted. Stock suspension cars may utilize coil-over shocks and springs and still receive weight break.
3.4h) TORQUE BOXES: The Wild Rides “S” Box has been deemed an acceptable OEM Fox-body torque box replacement when installed in the OEM location as per Wild Rides official instructions. The only acceptable control arm mounting location for the upper control arms is the middle hole on the “S” box, which is the same as the stock OEM mounting location.
3.6 WHEELIE BARS
WHEELIE BARS: Prohibited.
4:FRAME
4.4 FRAME
FRAME: Stock, unaltered frame rails required in front subframe. Subframes on unibodied cars may be joined under car. Maximum size material to be used; 2x3x1/8 inch rectangular tubing or 1 5/8 O.D. inch round tubing (.118MS or .083CM). If connector protrudes through floor, floor must be completely welded to connector. Stock rear subframes are required, but outer frame rail portion only may be notched for tire clearance only. When notching, stock inboard section of rear frame rails must remain stock, unaltered, and in stock location. Rear frame rail must remain in OEM stock condition in all areas. Notching (vertically) for rearend clearance permitted only on 2005-07 Ford Mustang rear frame rails, which may be notched a maximum of 2-inches vertically for rear end housing clearance only. The upper part of the rail must remain intact. Complete rear frame must be visible for tech purposes.
4.5 GROUND CLEARANCE
GROUND CLEARANCE: Minimum 3 inches from front of vehicle to 12 inches behind centerline of front axle; 2 inches for remainder of vehicle, except oil pan and exhaust headers.
4.12 WHEELBASE
WHEELBASE: Entries must retain stock wheelbase + or - 1 inches of stock. Maximum variation from left to right and front to back is 1 inch.
5: tires & wheels
5.1 Tires
TIRES - FRONT: Front tires must have a minimum tread width of 4.5 inches.
TIRES – REAR: Slicks permitted. Maximum actual measured tire size is as follows: Actual measured tread of tire is limited to 10.6 inches by 28.6 inches tall. Tire width will be measured by a “go-no go” gauge after conclusion of run at scale area. Tire tread may not extend outside fenders. Tire shaving is prohibited.
5.2 WHEELS
WHEELS: Spindle-mount front wheels prohibited.
6: INTERIOR
6.1 INTERIOR
Interior, GENERAL: Must maintain stock appearance; including factory OEM dashboard. Heater/air conditioners may be removed. Master cylinder may be relocated to accommodate brake pedals & linkage.
6.4 CARPET
CARPET: Floor and tunnel where visible must be upholstered or carpeted. Headliner required.
6.5 SEATS
SEATS: Upholstered OEM or aftermarket upholstered seats (2) in stock location is required. Rear seat may be removed; area must be carpeted or upholstered.
6.6 DOOR PANELS
DOOR PANELS: Door panels must be covered and stock appearing.
6.7 STEERING COLUMN
STEERING COLUMN: Aftermarket steering column permitted. Removable steering wheel permitted.
6.8 GAUGES
GUAGES: Aftermarket gauges may be installed in factory dash.
6.9 PEDALS/PEDAL LOCATION
PEDALS/PEDAL LOCATION: Aftermarket pedals and linkage are permitted, but must remain in stock location in foot well.
7: Body
BODY: Vehicle must retain original or NMRA accepted appearances and profiles for year and make of body. Original O.E.M. body shell (unibody structure from firewall to taillight panel) must be intact. Only 1955 & newer Ford bodied & Ford powered body styles permitted. Lightweight body panels restricted to hood, bumpers, and trunk-lid/hatch/deck-lid. Hood and/or trunk lid must be hinged or lift off. Funny car bodies prohibited. Body must be finished and painted. Alterations or aerodynamic modifications such as “chopped tops”, “channeling”, “sectioning”, “shortening” or “scaling down” prohibited.
If a convertible top is used as an entry, the use of ANY mechanism under or above the convertible top is not permitted. Ex: Building a cover that would be located above or below the convertible top, using straps below or above the convertible top, etc. Convertible top does not need to be operational. Convertible entries must compete with top up.
7.1 ADVERTIsING
GRAPHICS: Graphics (for advertising or creative purposes) permitted on entire body, including doors, hood, rear quarter panels, front fenders, wing, etc.
CONTINGENCY DECALS: In order to be eligible for NMRA official contingency program, all contingency decals are required to appear only on the rear quarter windows or rear window in a clear and organized fashion. Contingency decals may not be overlapped or modified. Other decals and sponsorship (non-contingency) may appear on bodywork, front end, and on windows.
NMRA REQUIRED DECALS: The following decals are required for competition in NMRA events.
NMRA Windshield Decal – must be installed on top of windshield. This NMRA decal must be the only decal on top of windshield. Other vehicle sponsor decals may be placed at base of windshield.
NMRA 2006 Drag Racing Series “Side” Decals – must be installed on each side of vehicle on quarter windows.
Class Sponsor Decal – class sponsor decal must be installed on base of windshield on the passenger side.
Permanent Numbers – permanent numbers are required for competition in this class.
7.2 SPOILERS
Rear SPOILER: Rear spoilers permitted, may not extend more than 26 inches from the transition point with the body to the rear most portions. Rear spoiler may not be molded into body (Pro Mod Style).
Spoilers must be stationary during entire run. A positive locking device to prevent movement required. Spring loaded spoilers prohibited. Spoiler spill plates (if used) may be a maximum of 12-inches height.
7.5 FIREWALLS
Firewall: Stock, unaltered firewall required.
7.6 FLOOR/TRUNK PAN/TRANSMISSION TUNNEL
FLOOR: Stock, unaltered floor-pan, except for through the floor sub frame connectors and shifter clearance, required from firewall to back bumper. Flat area of floor-pan starting at “kickup” for rear end (behind rear seat area) and rearward may be replaced with a minimum of .024-inch thick steel or .032-inch aluminum. Magnesium is prohibited. Transmission tunnel must remain stock. For manual transmission combinations only, an area may be clearanced and/or boxed for transmission and/or shifter clearance no greater than 144-square inches (approx 12-inches by 12-inches). This area may be removable. Removable floor-pan sections and/or transmission tunnels prohibited on all combinations. Area of floor only between frame rails may be modified as necessary for ladder bar clearance.
7.7 HOOD/SCOOP
Hood/Scoop: Lightweight cowl induction hoods permitted. Forward mounted scoops prohibited. Forward mounted scoop must be closed during competition. Cowl induction hoods restricted to a maximum of 6 inches as measured from the hood surface next to the cowl. The entire induction system must be completely covered by hood or scoop, which must be part of the vehicle hood. Hood must be attached separately in a conventional manner and must lift off or bolt on.
7.9 WINDSHIELDS/WINDOWS
Windows: O.E.M. safety glass required. Driver and passenger windows must be closed during racing. Windows do not have to be operative. NHRA-approved Lexan may be used to replace OEM sunroof glass and OEM T-Top glass, when installed in an NHRA-approved manner.
7.10 BUMPERS
Bumpers: Front and rear bumpers may be duplicates of originals and may be lightweight. License plate frame holders are not permitted to extend beyond flat surface of front bumper. No body components, bumper add-ons, or body kits are permitted to be added to the vehicle with the intent of increasing the frontal distance of the bumper for the purposes of breaking the infrared beams.
7.11 FENDER SPLASH PANS
Fender Splash Pans: Full, factory OEM sheet metal inner fenders required. May be trimmed for header clearance for non-Fox chassis vehicles only.
7.12 GRILLE
GRILLE: Full factory stock grille is not required, but must look completed. Except where OEM, blocking the front of the grille is prohibited.
7.13 WHEELWELLS
INNER Wheelwells: Aftermarket wheel tubs permitted. Material used to add to the width of the inner wheelwell may be steel or aluminum.
OUTER FENDERS: Leading and trailing edges of fenders may be trimmed for tire clearance, maximum 2-inches.
7.14 RAM AIR/ENGINE AIR PANS
Ram Air: Ram air system prohibited. Air pan permitted, but all entries may only get induction air from rear of hood/cowl area or under hood. Headlights/Tail Lights/Hazard Lights may not be removed/modified for air induction. Engine may not get air from forward facing source.
7.15 DOORS
Doors: Driver and passenger doors must be functional and operable from inside and outside of vehicle.
7.16 AERODYNAMICS
AERODYNAMICS: Taping of any body parts, seams, or front end prohibited. Removal of side mirrors prohibited.
7.17 BODY KITS
BODY KITS: Accepted, commercially available body kits permitted. Filling in the lower valance permitted if completed in a permanent manner (taping not permitted).
7.18 COWL AREA
COWL AREA: Complete OEM cowl required.
7.19 FRONT FENDERS/FRONT FASCIA
FRONT FENDERS/FRONT FASCIA: Stock or stock replacement front fenders and front fascia required. May not be one-piece front end. Filled-in lower valance, permitted. Hole(s) in front bumper prohibited.
8: Electrical
8.1 BATTERY/CHARGING SYSTEM
BATTERY: Battery may be relocated. Charging systems optional.
8.3 Ignition
IGNITION: Any battery operated ignition permitted. Any distributor drive system permitted.
8.5 STARTER
STARTER: All entries must be self-starting with on-board starter.
9: SUPPORT GROUPS
Bracket racing aids such as optical sensors, delay boxes, stutter boxes, etc. prohibited. Throttle stops prohibited. The application or use of any device, mechanical or electronic, that permits the driver to ascertain the position of their vehicle in relation to the starting line is prohibited.
9.2 OnBoard Diagnostics/Data Recorders
ONBOARD DIAGNOSTICS/DATA RECORDERS: Onboard diagnostics and data recorders used to monitor and record parameters such as a driveshaft speed, acceleration, nitrous timing, chassis strain, suspension travel etc., permitted. Wide band oxygen sensors permitted. “Playback” tachometers permitted (i.e. Autometer Dual Channel Ultimate II tachometers, and the use of its features). Laptops permitted in vehicle, must be safely secured.
9.8 TOW VEHICLES
TOW VEHICLES: Vehicles may not be towed in or to staging lanes, violation will result in disqualification of run. Vehicles may not be towed from the return road. Vehicles may be towed from the scales.
10: DRIVER
10.4 CREDENTIALS
CREDENTIALS: See general regulations.
11: CLASS & SAFETY REQUIREMENTS
It is the participant’s responsibility to familiarize oneself with the class requirements as found in the 2006 NMRA rulebook and the safety requirements as found in the 2006 NHRA rulebook.
The participant agrees that the participant bears the ultimate responsibility at all times to ensure the safety of participant’s vehicle and to ensure that participant complies with all applicable NHRA & NMRA rules. The participant agrees that participant is in the best position to know about the construction and operation of participant’s vehicle, equipment, and clothing, and whether there has been compliance with all applicable NHRA & NMRA rules.
12: Street-Legal Requirements
Headlights and tail lights for year & make of body used mandatory. Head lights & tail lights required to be functional.
14: RULES ADJUSTMENTS, MID SEASON LOG
Date: Adjustment:
None at this time.
NMRA SERIES 2007 RULES
Preliminary Version 1.0
Class Overview
Hot Street is designed for small block naturally aspirated 1955 and newer Ford bodied and Ford powered vehicles. Hot Street entries are limited to 302, 351 and 4.6L/5.4L modular engine types. Maximum of 480 cubic inches. Hot Street racing will be conducted at all drag racing events (see race schedule).
Qualifying Information, Ladder & Tree Type,
All Run, NHRA Sportsman Ladder, Pro .400 tree, Heads-Up.
Accepted Products Deadline: NMRA will accept requests from manufacturers to have new products considered for addition to 2006 accepted lists only up until January 1, 2007. After this date, NMRA will consider manufacturer requests for new products for the 2008 season.
Weight Breaks:
BASE CI BASE WEIGHT
327 2650
360 2850
400 3050
440 3250
Maximum Cubic Inches: 480
2-speed OEM Powerglide transmission may deduct 25-lbs.
4.6L/5.4L Modular Engines may deduct 300 lbs.
1950 – 1974 body styles – deduct 50 lbs’s from base weights
Manual transmission – weight penalty of 200-lbs’s added to base weights. See section 2.12
Standard Valve Angle/Port location Windsor-type Heads – deduct 150 lbs from base weights.
TFS “R” Cylinder Heads – deduct 75 lbs from base weights.
Stock type rear suspensions – deduct 50 lbs’s from base weights
Note: 8.5 lbs/cu in penalty applies for cubic inches over weight break limit. Ex: Small block 368 cubic inch engine is 2968.
Note: All weights are with driver & rounded down to the five pound increment. Ex: A calculated weight of 2968 would be required to weight 2965 with driver at scales.
Class Rules, HOT STREET
1: ENGINE
1.1 COOLING SYSTEM
RADIATOR: OEM production-style or aftermarket radiator is required and must be mounted in stock location. Stock core support is required.
Water pump: Any aftermarket (belt drive or electric drive) pump permitted.
COOLING FANS: Any permitted.
1.2 Engine
ENGINE: Engine limited to 302, 351, and 4.6L/5.4L modular engine types. Engine swapping permitted during event.
1.2a) ENGINE DRIVE BELT SYSTEM: Any permitted.
1.3 Exhaust
EXHAUST: All entries allowed to use tubular headers. Adapter plates permitted to bolt headers to cylinder head. Exhaust must be directed out of car body, away from driver and fuel tank. All exhaust gases released from engine must pass through complete exhaust system.
1.3a) HEADERS & COLLECTORS: Any headers and/or collectors permitted.
1.3b) EXHAUST TUBING/SIZE: Any tubing size permitted.
1.3c) TAILPIPE & EXHAUST RULES: Not required.
1.3d) MUFFLER REQUIREMENTS: Commercially available(generally available through retail locations) mufflers are required.
A maximum of two (2) mufflers is allowed. A maximum of one (1) inlet and one (1) outlet is permitted.
1.5 FUEL-DELIVERY SYSTEM
DELIVERY SYSTEM: Electric or mechanical fuel pumps permitted. Pressure regulators, and any line size permitted. All fuel lines must originate and return to a single, non-segmented, fuel cell or OEM fuel tank. Fuel pump must shut off with a master electrical switch. Any method of artificially heating or cooling fuel prohibited (cool cans, ice, wet rags, Freon, etc.). A valve for removal of fuel (gasoline) during technical inspections is mandatory. Valve must be installed between carburetor/injection and regulator, and should be installed in such a manner that allows a cup to be placed to catch fuel removed from the line. Exit of valve should be capped or plugged in addition to being closed for added safety.
Aftermarket/fabricated fuel tank or cell permitted. Must be located outside driver’s compartment and inside body lines. If tank or fuel filler is inside trunk, a bulkhead of minimum .032-inch aluminum or .024-inch steel must be used between trunk and driver compartment, and tank must be vented to outside of car. When used, fuel cells must have a metal box protecting the part of the fuel cell that is outside the trunk floor. Non-metallic fuel cells or tanks must be grounded to frame. See NHRA General Regulations Section 1.5.
1.6 GASOLINE
GASOLINE: Gasoline as outlined here is the only acceptable fuel for use in this eliminator for the specified combinations (See Section 13). The NMRA Racing Association reserves the right to check gasoline at any time during competition.
1.6a) SPEC FUEL: This class requires the use of one of the allowable spec fuels in this class. Mixing of fuels prohibited. Failure to pass fuel check is grounds for disallowance of the run during qualifying and disqualification from the event during eliminations. Fuel must pass color, fuel meter, specific gravity, chemical testing, and/or any other check as required by NMRA Technical Department.
1.9 NITROUS OXIDE
NITROUS OXIDE: Prohibited.
1.10 OIL SYSTEM
OILING SYSTEM: Wet sump oiling system required. Dry sump oiling systems prohibited. External oil pumps permitted. Any vacuum pump and/or evacuator system (header, or otherwise) permitted. Any oil pan permitted.
1.12 SUPERCHARGER
SUPERCHARGER: Prohibited.
1.15 BLOCK
Block: Any Ford type 302/351 or 4.6L/5.4L based engine block permitted. Block must maintain Ford O.E.M. bore spacing, deck heights (8.2, 8.7, 9.2, or 9.5 required), and crankshaft spacing for engine type used. Deck spacers (extensions) prohibited.
1.16 ENGINE LOCATION/MOUNTS
Engine Location: Engine location may be altered from stock, however no part of engine or heads may contact firewall. Engine plates and solid engine mounts permitted.
1.17 HEADS
GENERAL GUIDELINES:
302/351 Type Heads: Only commercially available cast aluminum or cast iron, two-valve per cylinder heads permitted. Billet, one-off, custom and/or fabricated heads prohibited. Cylinder heads must be overhead valve single spark plug per cylinder design. 4.6/5.4 type Heads: Only commercially available cast aluminum or cast iron, cylinder heads permitted. Billet, one-off, custom and/or fabricated heads prohibited. Cylinder head must be single spark plug per cylinder design. 1.17a) HEADS, PERMITTED: Only original manufacture, generally available heads, accepted by NMRA, permitted. External modifications prohibited in port area. Spark plug placement and depth must remain stock. Billet, one-off, custom and/or fabricated heads prohibited. 1.17b) HEADS, MASS PRODUCED: Only mass produced, commercially available, NMRA accepted, cast aluminum or iron Ford cylinder heads permitted. Low volume, one off, aluminum cylinder heads prohibited.
1.17c) HEADS, BOLT PATTERN: Class is permitted standard bolt-pattern only for cylinder heads.
Maximum of 10 head fasteners per side in Ford O.E.M. location.
1.17d) HEADS, PORTING: Permitted.
1.17e) HEADS, WELDING/EPOXY: Prohibited.
1.17f) HEADS, VALVES: Any valve permitted. Bronze lined or replacement guides permitted.
1.17g) HEADS, MILLING: Permitted. Cylinder heads must maintain original production valve angles + or – 2 degrees
1.17h) HEADS, PUSHROD SLEEVES: Permitted, however the use of welding or epoxy to secure sleeves prohibited. Cylinder head may be cut for larger push rods.
1.17i) HEADS, COMBUSTION CHAMBER VOLUME: No regulations limiting combustion chamber volume.
1.17j) HEADS, PORT PLATES/ADAPTER PLATES: Intake port plates prohibited, exhaust port plates maximum thickness .500-inch permitted.
1.17k) VALVE JOB: Any valve job permitted.
1.17l) Permitted Cylinder Head List, Parts Number: These are the only permitted cylinder heads and part numbers for competition in this category. If your cylinder head is not on this list, it is prohibited.
§ Ford OEM 5.0/289/302/351 Windsor Cast Iron Cylinder Heads**
§ Ford OEM 4.6/5.4L 2V/4V Cylinder Heads
§ Ford GT-40/GT-40P**
§ FRPP J302, N351, V351, X303, Y303, Z304 Cast Iron Heads**
§ FRPP 4.6 2V & 4V Cylinder Heads
§ Edelbrock Performer & Performer RPM, PN# 60329, 60359, 60279, 60229, 60259, 60269**
§ Edelbrock Victor Jr. PN# 77169,77179,77189,77389,77399,61269,61279**
Edelbrock 18-Degree Victor Jr. CNC 2.5-inch exhaust pattern, PN # 1-61309**§ Edelbrock Victor & Glidden PN# 77219,77289, 77299,77099, 61099, 61299
§ Trick Flow Twisted Wedge Std & Track Heat Aluminum Cylinder Heads**
§ Trick Flow Twisted Wedge “R” ##
§ Trick Flow Specialties “Street Heat” Aluminum & Cast Iron**
§ Brodix ST 5.0, PN# ST 5.0, ST 5.0R**
§ Brodix Track 1, Track 1X, Cylinder Heads**
§ Holley 5.0, PN# 300-573, 574, 575, 576, 577, 578, 579**
§ World Products Roush 180 & Windsor Jr, PN# 53030, 23030**
§ World Products Roush 200 & Windsor Sr, PN# 53040**
§ Air Flow Research 165, 185, 205, & 225 heads**
§ Canfield PN# 18-350, 20-450, & 20-475**
§ Dart Pro 1 As Cast & CNC 170cc, 195cc, 210cc, & 225cc**
§ RHS 180cc, 200cc & 215cc (Iron & Alum)
## these cylinder heads permitted 75-lb weight deduction.
** these cylinder heads part #’s maintain Ford OEM stock-valve angle, intake port location, and/or near stock exhaust port location and bolt pattern, or a combination of, during initial production and will be permitted 150-lb weight deduction.
Note: Stock factory OEM heads are those cylinder heads that are factory production line installed on production vehicles as recognized by NHRA.
1.17m) INTAKE PORT LOCATION: Bottom of intake port may not be greater (farther) than .960-inch from head mounting surface. Purposeful erratic machining of the port floor to bypass this rule will be grounds for disqualification from event.
1.17n) INTAKE PORT HEIGHT: Maximum port height is 2.40-inch as measured at intake manifold mounting surface.
1.18 VALVETRAIN
1.18a) CAMSHAFT: Any permitted.
1.18b) LIFTERS: Any permitted.
1.18c) LIFTER BORES: Lifter bores permitted to be bushed.
1.18d) VALVE LOCK: Any permitted.
1.18e) RETAINERS: Any permitted.
1.18f) ROCKER ARMS: Any permitted.
1.18g) CAMSHAFT DRIVE SYSTEM: Any permitted.
1.18h) REV KITS: Any permitted.
1.18j) PUSHRODS: Steel is only accepted material. Composite pushrods prohibited.
1.19 CARBURETORS
CARBURETORS: Single Holley 4150 style permitted on all combinations. Split carburetors prohibited (example: a Carburetor split and offset into two two-barrels). Maximum throttle bore size – 1.775-inch. Maximum venturi size – 1.587-inch. Only standard 4150-style boosters are permitted.
1.19a) CARBURETOR MODIFICATIONS: Any permitted.
1.20 FUEL INJECTION
Fuel Injection, PUSHROD BASED APPLICATIONS: Fuel injection must be electronic. Single throttle body required, maximum throttle body size 90mm (3.543-inch). EFI 4 hole 4150 type throttle bodies are permitted on carb style intakes, maximum throttle body size 1.750-inch.
Fuel Injection, MODULAR ENGINE APPLICATIONS: Fuel injection must be electronic. Single or dual throttle body required.
1.20a) MASS AIR SIZE & TYPE PERMITTED: Any permitted.
1.20b) FUEL INJECTOR SIZES & TYPES: Any size/type fuel injector permitted. Maximum of 8 fuel injectors located in stock location.
1.21 INTAKE MANIFOLD
INTAKE MANIFOLD: Accepted, commercially available, mass-produced cast lower intake manifolds required. Fabricated and/or sheet-metal or carbon fiber intake manifolds prohibited, with the exception of EFI upper intake manifolds & 4.6L/5.4L intakes. Spacers permitted between EFI upper and lower intakes (any height). Carb spacers permitted. Maximum 2.200-inch total thickness, including sandwiched gaskets. Maximum of one intake gasket (max. thickness 1/8-inch) between each mating surface. Spacers prohibited between intake manifold and cylinder heads.
1.21a) PORTING: Permitted.
1.21b) WELDING/EPOXY: OEM 4.6/5.4L intakes may be welded/epoxied. EFI lower intake manifolds may have minor epoxy/weld added to the exterior of the intake runners only. All other applications: Prohibited.
1.21c) PERMITTED INTAKE MANIFOLD LIST, PART NUMBERS: These are the only permitted intakes and part numbers for competition in this category. If your part number is not on this list consider it prohibited.
§ Stock Ford OEM 4.6L/5.4L/5.0L Intake Manifolds
§ Ford/FRPP GT-40 & Cobra Lower, Truck/Saleen/Vortech
§ Ford/FRPP 4.6L M-9424-T46
§ 4.6L/5.4L Sheet metal/Fabricated Intake (any model)
§ Reicard Racing 2 Valve EFI 4.6L Sheet Metal Manifold
§ TFS “R” Lower Intake
§ Edelbrock Victor 5.0 & Victor 351 EFI
§ Edelbrock Victor Jr. Carb Intake 8.2, 8.7, 9.2,. 9.5 Deck
§ Edelbrock Performer RPM II #7123 - Upper & Lower
§ Edelbrock Super Victor Carb & EFI Intakes 8.2, 8.7, 9.2., 9.5 Deck
§ Holley SysteMax Intake (lower)
§ Parker Funnel Web Intake – 8.2 deck 302 only
§ Canfield Small Block Ford Intake Manifold, 8.2 or 8.7 deck
§ Sullivan Modular 4.6LL & 5.4 Intake Manifolds PN# 1-100a, 1-100b, 1-100c,1-100d
1.22 SOLENOIDS
SOLENOIDS: Not applicable.
1.23 TURBOCHARGERS
TURBOCHARGER: Prohibited.
1.24 AFTERCOOLER/INTERCOOLER
AFTERCOOLER/INTERCOOLER: Prohibited.
1.24a) AFTERCOOLER/INTERCOOLER LOCATION: Not applicable.
1.25 POWER ADDERS
POWER ADDERS: Prohibited. Water injection is prohibited.
1.26 CRANKSHAFT
CRANKSHAFT: Cast iron or steel crankshaft required. Composite and/or multi-piece crankshafts prohibited.
1.27 CONNECTING RODS
CONNECTING RODS: Any steel, aluminum, or titanium connecting rods required. Composite Connecting rods prohibited.
1.28 HEAD GASKETS & QUENCH AREA
HEAD GASKETS & QUENCH AREA: No restrictions.
1.29 PISTONS, PINS, RINGS
PISTONS, PINS, RINGS: Any piston, pin, ring combination permitted.
1.30 BOOST CONTROLLERS
BOOST CONTROLLERS: Prohibited.
1.31 WASTEGATE & PRESSURE REGULATOR
WASTEGATE & PRESSURE REGULATOR: Prohibited.
1.32 VISIBLE COATINGS
VISIBLE COATINGS: Visible coatings are permitted where lubricants are present. Visible piston coating above the top ring is permitted. Visible coating of cylinder head runners, combustions chambers, and/or intake manifold runners/plenums prohibited. Visible coating of any external surface of cylinder head or intake manifold prohibited, including, but not limited to runners and/or plenums.
1.33 “O” Ringing of block
“O” Ringing of Block: Permitted.
2: Drivetrain
2.3 CLUTCH
CLUTCH: Single disk clutch required.
2.4 DRIVESHAFT
DRIVESHAFT: Driveshaft required to be only steel or only alumium regardless of origin or manufacturer. 2.11 REAREND
REAREND: Any automotive type rearend permitted.
2.12 MANUAL TRANSMISSIONS
MANUAL TRANSMISSIONS: OEM or aftermarket transmissions with a maximum of 5 forward speeds permitted. Clutchless models permitted. Any gear change must occur from direct action by the driver. Pneumatic, electric, hydraulic, etc. shifters prohibited. Vehicles using manual transmission must add 200 pounds to listed base weight (see section 13). Torque converter not permitted with this type of transmission.
2.13 PURPOSE BUILT TRANSMISSIONS
PURPOSE BUILT TRANSMISSIONS: Prohibited.
2.14 AUTOMATIC TRANSMISSIONS
(OEM American transmissions or replicas of OEM American transmissions that use planetary gears)
AUTOMATIC TRANSMISSIONS: The following automatic transmissions with torque converters originally produced by an American automobile manufacturer or replicas of one, are the only permitted automatic transmissions in this class: Ford C4, C6, AOD, AOD-E, 4R70W, & 5R55S and GM Powerglide and Turbo 400. Transmission-to-engine adapters permitted. Trans brakes permitted. Lock-up transmissions/torque converters prohibited in C4, C6, GM Turbo 400, & GM Powerglide. Any gear change must occur as a result of an internal function of the transmission or from direct action by the driver. Pneumatic, electric, hydraulic, etc. shifters prohibited. Automatic entries run at listed base weights. Clutch not permitted with this type of transmission.
3: BRAKES & SUSPENSION
3.1 BRAKES
BRAKES: All cars must have front and rear hydraulic brakes. Automated brakes or any type of traction control is prohibited. Application and release of brakes must be a function of the driver’s foot. Line loc permitted on front wheels only. Any other electric, pneumatic, or hydraulic device in the system is prohibited.
3.2 SHOCK ABSORBERS
shock absorbers: each vehicle in competition must be equipped with one operative shock absorber for each sprung wheel. Shock absorbers may be either hydraulic or friction type, securely mounted and in good working order. Shocks must be stand alone and may not be adjustable during run via electronic and/or other means.
STEERING: Manual or power assisted aftermarket steering system in stock location mandatory.
3.4 Suspension, FRONT 79 & NEWER
FRONT SUSPENSION:
3.4a) K-MEMBERS: Aftermarket K-Members permitted, but must attach to the chassis using only the original eight (8) factory O.E.M. type mounting bolts in the factory mounting location. No part of the K-member may be permanently attached to the chassis. K-member may be modified in oil pan area to allow oil pan enlargement or removal.
3.4b) STRUT TOWER: Factory strut towers required. No modifications may be made to the strut towers except roll bar or roll cage may be welded to the strut towers for safety purposes.
3.4c) CONTROL ARMS: OEM or tubular stock type control arms required which are attached in stock location.
3.4d) SHOCKS/STRUTS: Aftermarket stock-type struts and shocks permitted provided stock attachment location used. Shocks must be stand alone and may not be adjustable during run via electronic and/or other means.
3.4e) SPRINGS: Aftermarket springs permitted.
3.4f) COIL OVERS: Coil over shocks and struts permitted. Stock OEM mounting location required.
3.4g) CAMBER PLATES: Bolt on type camber plates permitted. Bolt on plate may be tack welded to strut tower to prevent movement (2.00-inch max length), otherwise welding prohibited. Camber plate may only be attached to top flat portion of strut tower. Attachment to any other structure prohibited.
3.4h) SPINDLES: Only stock OEM or NMRA accepted, bolt-on, commercially available aftermarket spindles permitted. NMRA accepted spindles are Anthony Jones Engineering, Racecraft, Santhuff, & Strange.
3.4 Suspension, FRONT 78 & OLDER
FRONT SUSPENSION:
NO FRONT WHEEL DRIVE CONVERSIONS PERMITTED IN THIS ELIMINATOR.
3.4a) K-MEMBERS: Aftermarket K-Members permitted. K-member may be modified in oil pan area to allow oil pan enlargement or removal.
3.4b) STRUT TOWER/SHOCK TOWER: OEM strut tower/shock tower may be removed in lieu of installing/using commercially available struts/shocks. All other sections of front suspension rules must be adhered to.
3.4c) CONTROL ARMS: OEM or tubular stock type control arms permitted.
3.4d) SHOCKS/STRUTS: Aftermarket struts and shocks permitted. Shocks must be stand alone and may not be adjustable during run via electronic and/or other means.
3.4e) SPRINGS: Aftermarket springs permitted.
3.4f) COIL OVERS: Coil over shocks and struts permitted.
3.4g) CAMBER PLATES: Bolt on type camber plates permitted.
3.4h) SPINDLES: Accepted, bolt-on, commercially available aftermarket spindles permitted. NMRA accepted spindles are Anthony Jones Engineering, Santhuff, Heidt, & Strange.
3.4 SUSPENSION, REAR
REAR SUSPENSION: Only stock type rear suspension or ladder bar rear suspension permitted.
Stock Type Suspension: Must utilize stock and/or aftermarket direct replacement type suspension components including shocks, springs, (leaf springs may be moved inboard), and/or control arms. To receive stock suspension weight break, shocks and springs must be in stock OEM location.
3.4a) 3-LINK and 4-LINK: Stock or stock-type direct-replacement 3-link and/or 4 links required. All stock type 3 or 4 link suspensions must maintain stock lateral angles and attachment points, but may be moved up or down on rear axle. Retrofitting and/or cross-breeding of 3-link and 4-link components prohibited. Shocks and springs must remain in factory location.
3.4b) LADDER BARS: Welded on ladder bars using fabricated front cross member support permitted. Track locators permitted.
3.4c) REPLACEMENT CONTROL ARMS & LEAF SPRINGS: Replacement upper and lower control arms and leaf springs permitted. Control arms may use any type bushing, bearing, or rod end. Control arms may be adjustable to any length.
3.4d) PANHARD BARS: Permitted. Panhard bar must be located aft of rearend housing. Panhard bar may be welded.
3.4e) SWAY BARS: Aftermarket or factory sway bars permitted. Aftermarket sway bars may be welded to both chassis and rearend housing.
3.4f) TORQUE ARMS: Permitted.
3.4g) REAR SHOCKS & SPRINGS: Any permitted, including coil over shocks and springs. May be relocated. Electronic or adjustable rear shocks are permitted. Stock suspension cars may utilize coil-over shocks and springs and still receive weight break.
3.4h) TORQUE BOXES: The Wild Rides “S” Box has been deemed an acceptable OEM Fox-body torque box replacement when installed in the OEM location as per Wild Rides official instructions. The only acceptable control arm mounting location for the upper control arms is the middle hole on the “S” box, which is the same as the stock OEM mounting location.
3.6 WHEELIE BARS
WHEELIE BARS: Prohibited.
4:FRAME
4.4 FRAME
FRAME: Stock, unaltered frame rails required in front subframe. Subframes on unibodied cars may be joined under car. Maximum size material to be used; 2x3x1/8 inch rectangular tubing or 1 5/8 O.D. inch round tubing (.118MS or .083CM). If connector protrudes through floor, floor must be completely welded to connector. Stock rear subframes are required, but outer frame rail portion only may be notched for tire clearance only. When notching, stock inboard section of rear frame rails must remain stock, unaltered, and in stock location. Rear frame rail must remain in OEM stock condition in all areas. Notching (vertically) for rearend clearance permitted only on 2005-07 Ford Mustang rear frame rails, which may be notched a maximum of 2-inches vertically for rear end housing clearance only. The upper part of the rail must remain intact. Complete rear frame must be visible for tech purposes.
4.5 GROUND CLEARANCE
GROUND CLEARANCE: Minimum 3 inches from front of vehicle to 12 inches behind centerline of front axle; 2 inches for remainder of vehicle, except oil pan and exhaust headers.
4.12 WHEELBASE
WHEELBASE: Entries must retain stock wheelbase + or - 1 inches of stock. Maximum variation from left to right and front to back is 1 inch.
5: tires & wheels
5.1 Tires
TIRES - FRONT: Front tires must have a minimum tread width of 4.5 inches.
TIRES – REAR: Slicks permitted. Maximum actual measured tire size is as follows: Actual measured tread of tire is limited to 10.6 inches by 28.6 inches tall. Tire width will be measured by a “go-no go” gauge after conclusion of run at scale area. Tire tread may not extend outside fenders. Tire shaving is prohibited.
5.2 WHEELS
WHEELS: Spindle-mount front wheels prohibited.
6: INTERIOR
6.1 INTERIOR
Interior, GENERAL: Must maintain stock appearance; including factory OEM dashboard. Heater/air conditioners may be removed. Master cylinder may be relocated to accommodate brake pedals & linkage.
6.4 CARPET
CARPET: Floor and tunnel where visible must be upholstered or carpeted. Headliner required.
6.5 SEATS
SEATS: Upholstered OEM or aftermarket upholstered seats (2) in stock location is required. Rear seat may be removed; area must be carpeted or upholstered.
6.6 DOOR PANELS
DOOR PANELS: Door panels must be covered and stock appearing.
6.7 STEERING COLUMN
STEERING COLUMN: Aftermarket steering column permitted. Removable steering wheel permitted.
6.8 GAUGES
GUAGES: Aftermarket gauges may be installed in factory dash.
6.9 PEDALS/PEDAL LOCATION
PEDALS/PEDAL LOCATION: Aftermarket pedals and linkage are permitted, but must remain in stock location in foot well.
7: Body
BODY: Vehicle must retain original or NMRA accepted appearances and profiles for year and make of body. Original O.E.M. body shell (unibody structure from firewall to taillight panel) must be intact. Only 1955 & newer Ford bodied & Ford powered body styles permitted. Lightweight body panels restricted to hood, bumpers, and trunk-lid/hatch/deck-lid. Hood and/or trunk lid must be hinged or lift off. Funny car bodies prohibited. Body must be finished and painted. Alterations or aerodynamic modifications such as “chopped tops”, “channeling”, “sectioning”, “shortening” or “scaling down” prohibited.
If a convertible top is used as an entry, the use of ANY mechanism under or above the convertible top is not permitted. Ex: Building a cover that would be located above or below the convertible top, using straps below or above the convertible top, etc. Convertible top does not need to be operational. Convertible entries must compete with top up.
7.1 ADVERTIsING
GRAPHICS: Graphics (for advertising or creative purposes) permitted on entire body, including doors, hood, rear quarter panels, front fenders, wing, etc.
CONTINGENCY DECALS: In order to be eligible for NMRA official contingency program, all contingency decals are required to appear only on the rear quarter windows or rear window in a clear and organized fashion. Contingency decals may not be overlapped or modified. Other decals and sponsorship (non-contingency) may appear on bodywork, front end, and on windows.
NMRA REQUIRED DECALS: The following decals are required for competition in NMRA events.
NMRA Windshield Decal – must be installed on top of windshield. This NMRA decal must be the only decal on top of windshield. Other vehicle sponsor decals may be placed at base of windshield.
NMRA 2006 Drag Racing Series “Side” Decals – must be installed on each side of vehicle on quarter windows.
Class Sponsor Decal – class sponsor decal must be installed on base of windshield on the passenger side.
Permanent Numbers – permanent numbers are required for competition in this class.
7.2 SPOILERS
Rear SPOILER: Rear spoilers permitted, may not extend more than 26 inches from the transition point with the body to the rear most portions. Rear spoiler may not be molded into body (Pro Mod Style).
Spoilers must be stationary during entire run. A positive locking device to prevent movement required. Spring loaded spoilers prohibited. Spoiler spill plates (if used) may be a maximum of 12-inches height.
7.5 FIREWALLS
Firewall: Stock, unaltered firewall required.
7.6 FLOOR/TRUNK PAN/TRANSMISSION TUNNEL
FLOOR: Stock, unaltered floor-pan, except for through the floor sub frame connectors and shifter clearance, required from firewall to back bumper. Flat area of floor-pan starting at “kickup” for rear end (behind rear seat area) and rearward may be replaced with a minimum of .024-inch thick steel or .032-inch aluminum. Magnesium is prohibited. Transmission tunnel must remain stock. For manual transmission combinations only, an area may be clearanced and/or boxed for transmission and/or shifter clearance no greater than 144-square inches (approx 12-inches by 12-inches). This area may be removable. Removable floor-pan sections and/or transmission tunnels prohibited on all combinations. Area of floor only between frame rails may be modified as necessary for ladder bar clearance.
7.7 HOOD/SCOOP
Hood/Scoop: Lightweight cowl induction hoods permitted. Forward mounted scoops prohibited. Forward mounted scoop must be closed during competition. Cowl induction hoods restricted to a maximum of 6 inches as measured from the hood surface next to the cowl. The entire induction system must be completely covered by hood or scoop, which must be part of the vehicle hood. Hood must be attached separately in a conventional manner and must lift off or bolt on.
7.9 WINDSHIELDS/WINDOWS
Windows: O.E.M. safety glass required. Driver and passenger windows must be closed during racing. Windows do not have to be operative. NHRA-approved Lexan may be used to replace OEM sunroof glass and OEM T-Top glass, when installed in an NHRA-approved manner.
7.10 BUMPERS
Bumpers: Front and rear bumpers may be duplicates of originals and may be lightweight. License plate frame holders are not permitted to extend beyond flat surface of front bumper. No body components, bumper add-ons, or body kits are permitted to be added to the vehicle with the intent of increasing the frontal distance of the bumper for the purposes of breaking the infrared beams.
7.11 FENDER SPLASH PANS
Fender Splash Pans: Full, factory OEM sheet metal inner fenders required. May be trimmed for header clearance for non-Fox chassis vehicles only.
7.12 GRILLE
GRILLE: Full factory stock grille is not required, but must look completed. Except where OEM, blocking the front of the grille is prohibited.
7.13 WHEELWELLS
INNER Wheelwells: Aftermarket wheel tubs permitted. Material used to add to the width of the inner wheelwell may be steel or aluminum.
OUTER FENDERS: Leading and trailing edges of fenders may be trimmed for tire clearance, maximum 2-inches.
7.14 RAM AIR/ENGINE AIR PANS
Ram Air: Ram air system prohibited. Air pan permitted, but all entries may only get induction air from rear of hood/cowl area or under hood. Headlights/Tail Lights/Hazard Lights may not be removed/modified for air induction. Engine may not get air from forward facing source.
7.15 DOORS
Doors: Driver and passenger doors must be functional and operable from inside and outside of vehicle.
7.16 AERODYNAMICS
AERODYNAMICS: Taping of any body parts, seams, or front end prohibited. Removal of side mirrors prohibited.
7.17 BODY KITS
BODY KITS: Accepted, commercially available body kits permitted. Filling in the lower valance permitted if completed in a permanent manner (taping not permitted).
7.18 COWL AREA
COWL AREA: Complete OEM cowl required.
7.19 FRONT FENDERS/FRONT FASCIA
FRONT FENDERS/FRONT FASCIA: Stock or stock replacement front fenders and front fascia required. May not be one-piece front end. Filled-in lower valance, permitted. Hole(s) in front bumper prohibited.
8: Electrical
8.1 BATTERY/CHARGING SYSTEM
BATTERY: Battery may be relocated. Charging systems optional.
8.3 Ignition
IGNITION: Any battery operated ignition permitted. Any distributor drive system permitted.
8.5 STARTER
STARTER: All entries must be self-starting with on-board starter.
9: SUPPORT GROUPS
Bracket racing aids such as optical sensors, delay boxes, stutter boxes, etc. prohibited. Throttle stops prohibited. The application or use of any device, mechanical or electronic, that permits the driver to ascertain the position of their vehicle in relation to the starting line is prohibited.
9.2 OnBoard Diagnostics/Data Recorders
ONBOARD DIAGNOSTICS/DATA RECORDERS: Onboard diagnostics and data recorders used to monitor and record parameters such as a driveshaft speed, acceleration, nitrous timing, chassis strain, suspension travel etc., permitted. Wide band oxygen sensors permitted. “Playback” tachometers permitted (i.e. Autometer Dual Channel Ultimate II tachometers, and the use of its features). Laptops permitted in vehicle, must be safely secured.
9.8 TOW VEHICLES
TOW VEHICLES: Vehicles may not be towed in or to staging lanes, violation will result in disqualification of run. Vehicles may not be towed from the return road. Vehicles may be towed from the scales.
10: DRIVER
10.4 CREDENTIALS
CREDENTIALS: See general regulations.
11: CLASS & SAFETY REQUIREMENTS
It is the participant’s responsibility to familiarize oneself with the class requirements as found in the 2006 NMRA rulebook and the safety requirements as found in the 2006 NHRA rulebook.
The participant agrees that the participant bears the ultimate responsibility at all times to ensure the safety of participant’s vehicle and to ensure that participant complies with all applicable NHRA & NMRA rules. The participant agrees that participant is in the best position to know about the construction and operation of participant’s vehicle, equipment, and clothing, and whether there has been compliance with all applicable NHRA & NMRA rules.
12: Street-Legal Requirements
Headlights and tail lights for year & make of body used mandatory. Head lights & tail lights required to be functional.
14: RULES ADJUSTMENTS, MID SEASON LOG
Date: Adjustment:
None at this time.