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View Full Version : Vortec S-trim Question Please Help


obadgixxer750
08-31-2002, 02:56 PM
HEY I GOT A 302 WITH TFS TW HEADS,TFS TRACK HEAT INTAKE,75MM T/B SO FAR.MY BUDDY IS GIVING ME HIS VORTEC S-TRIM THAT HE NEVER PUT ON HIS CAR.MY QUESTIONS ARE WHAT SIZE INJECTORS AND WHAT SIZE MASS AIR SHOULD I GO WITH.IT HAS COG BELT DRIVE AND SHOULD PUT OUT 14LBS BOOST.ALSO I HAVE A COMPLETE PAXTON 1000HP FUEL SYSTEM ON MY CAR. HE DOESNT HAVE THE FMU,DO I HAVE TO RUN A FMU OR WILL MY FUEL SYSTEM BE ENOUGH?ALSO WHAT CAM SHOULD I RUN?THANKS FOR ANY ADVISE IN HELPING ME GET THIS THING GOING.

oRaNgeT-76
09-05-2002, 05:50 PM
with a complete fuel system you should be fine with 42 # injectors and no FMU with at least a 75mm mass air sensor
just crank up your regulator to probably close to 45-50# of fuel

the main thing i would do is take the cog pullies off the S-trim b4 you break it. unless its a heavy duty S-trim. you should run a 8-rib serp belt in stead. its safer exspecially if your still planning on driving the car on the street.

as for a cam ....i always had good luck with Lunati 51014 cams but .....i would totally have a reputable engine builder do a custom cam for ya. or you can actually take the real street rout and just run a stock cam .......works good

JHenke
09-05-2002, 07:10 PM
Run either 42 or 50# injectors. You wont need an fmu. Make sure you have at least #8 feed for the fuel. Like Alex said, if it's not an HD unit, take the cogs off. The serp will at least slip at high rpm (missed shifts!), better for the street.

Best case, ditch the mass air and get a DFI. If not run a 75. Like Alex said, look up a reputable builder or leave the stock and maybe add 1.7 rockers.

obadgixxer750
09-06-2002, 02:11 AM
thanks for the advise guys it helps a lot.do you know anybody getting rid of 8 rib serp.belt set up for that vortec i got?thanks

oRaNgeT-76
09-06-2002, 02:08 PM
actually i do have a couple sitting around up at the shop from a couple of my old blower kits.

if you still need a set let me know

A2slow50@aol.com

Alex
Ellas Performance
609-442-5051