Fuel pressure drops.

[Brett88lx]

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Excuse me for the ignorance but I have a question.

I have a 302 w/ GT40P's, B303, rockers, Mass air and 24lb's.

1.) What should my fuel pressure be at?

and

2.) Is my fuel pressure supposed to drop(guage) after I shut the car off or is it supposed to stay where it's at on the guage?

Thanks in advance for any responses/advice.

 

[bullitstang1313]

Fuel pressure should be around 39 psi with the vacuum line off. Fuel pressure should not drop after the engine stops unless something is leaking.

 

[HISSIN50]

It will eventually bleed down, and aftermarket AFPR's are much more likely to see a quick bleed down.
There's no reason to keep the fuel lines pressurized once the car is shut off. When you go to restart, the prime quickly repressurizes things.

Good luck.