Fuel Pressure

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Apr 26, 2003 | 12:16 AM

txhotRS

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Joined: Apr 2003

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From: Houston TX

Fuel Pressure

Can anyone TELL ME what the STOCK fuel pressure is on a 305 TBI ('89 if it helps)
Thank you so so much

Apr 26, 2003 | 01:25 AM

Frik92RS

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Joined: Jan 2003

Posts: 283

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From: Daytona Beach, FL

Car: Camaro RS

Engine: L03 305

Transmission: 700R4 Auto

The stock fuel pressure was set from the factory somewhere between 9-12psi. Chevy didn't seem to have a set number for their units coming out of the factory because I've seen them all over that band.

Apr 26, 2003 | 12:38 PM

Chuck!

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Joined: Apr 2001

Posts: 1,342

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From: Dayton, O.

Car: 91 Camaro Z28

Engine: LS7

Transmission: M12/T56

Axle/Gears: 3.79

Mine was between 11 and 12 psi.

Apr 27, 2003 | 06:28 PM

arrowcamaro

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From: Chester, VA

Car: '88 GTA

Engine: L-98

Transmission: T-56

mine was at 10.5

Apr 27, 2003 | 08:05 PM

badxs

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Joined: Apr 2003

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From: illinios

10.5 here, end all my books say 9-13 psi, allso the should flow 1 gallon a min for volume, remember it doesnt have to have baerly any volume to put out 9-13 psi so its criticall to check too

Apr 29, 2003 | 04:04 PM

89IRO

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From: So Cal

What is the stock fuel pressure on my '89 IROC-Z 350 TPI? I heared that after exhaust (including headers), ignition stuff, K&Ns, air foil, gears, etc... a good setting for an aftermarket afpr, is 50 psi. So what is mine stock? -89IRO