whats a good fuel psi?
Thread Starter
Joined: Jun 2005
Posts: 1,245
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From: Fairfield, CA
Car: 91camaro rs,2014 silverado 5.3L
Engine: 5.7Lcarb,5.3L
Transmission: 700-r4, 6L80
Axle/Gears: strange 3.73's
whats a good fuel psi?
just got done with a carb swap in a 91 rs. right now it is at 5 psi at idle. not sure what it is at wot haven't checked that yet. check the sig for my set-up.
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From: Waterloo, Iowa
Car: 86 firebird with 98 firebird interi
Engine: pump gas 427sbc Dart Lil M 13.5:1
Transmission: Oldani TH400 w/ BTE 9" convertor
Axle/Gears: 31 spline Moser/full spool/4.11Rich
Re: whats a good fuel psi?
While 5 psi is fine at idle, find out what your doing at WOT. I can tell you with first hand info, I was forced to use a holley red pump as a crutch when my race pump took a dump, idling i was still at 8 psi where i set it, soon as i left the gate it dumped to 3psi and by half track there was a noticable slow down and by the end of the track i was getting a lean pop...pump could not keep up and i literally lost .3 from just swapping pump a with pump b.
I always shoot for 8psi at idle and like to see it stay rock solid no matter what i'm doing.
I always shoot for 8psi at idle and like to see it stay rock solid no matter what i'm doing.
Thread Starter
Joined: Jun 2005
Posts: 1,245
Likes: 8
From: Fairfield, CA
Car: 91camaro rs,2014 silverado 5.3L
Engine: 5.7Lcarb,5.3L
Transmission: 700-r4, 6L80
Axle/Gears: strange 3.73's
Re: whats a good fuel psi?
well right now i get 5 psi all the way from idle to wot. so i think i will keep it at the right now. thanks for the replies. -jon
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