tpi fuel pressure

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Jul 10, 2010 | 07:25 PM

supamaro383

Thread Starter

Member

Joined: Feb 2009

Posts: 150

Likes: 1

From: OAKLAND, CA.

Car: 92 RS

Engine: 383 FIRST TPI OBDII DBW

Transmission: T-56

Axle/Gears: 3.73 POSI DISK

tpi fuel pressure

I have a question I have tpi on my 91 camaro now and was wondering what fuel pressure I should start off with. I have a 383 with 24#lb injectiors also a aftermarket afpr and a mail tune order. I have read and read for days to fine a fuel pressure to start with but I read 37lbs all the way to 50lbs. any help would be apprecteid.......

Jul 10, 2010 | 09:01 PM

Smoothjr91z28

Junior Member

Joined: May 2010

Posts: 9

Likes: 0

Car: 91 Z28 CONVERTIBLE

Engine: 305 TPI

Transmission: 700R4

Re: tpi fuel pressure

According to the dealers service manual for 5.0L & 5.7L with the ignition “ ON " and engine “ OFF " (zero vacuum), fuel pressure at the test conection should be (41-47 psi). I have it at 46 psi you can set it 50 psi. Also check this site https://www.thirdgen.org/optimal-fuel-pressure

Last edited by Smoothjr91z28; Jul 10, 2010 at 09:05 PM.