1968 396/325 Stock Fuel pump pressure

[Tinkerr]

Anybody have any real world fuel pump pressure numbers for a stock pump. I had my motor dynoed today and the pump was only carrying 2.5psi. It was a steady 2.5 but only 2.5. We supplemented with the dyno's electric pump and picked up 5-7 hp above 4800rpms. It would indicate they motor wasn't starving, but seems low. Thanks

[Mike S]

 I checked the AMA manual for the Camaro and I see the V-8's (except L78) listed as having a pump pressure of 5.0-6. PSI

[Tinkerr]

Looks like I'm buying a new fuel pump to replace the one that doesn't have any run time on it. Maybe Ethanol impacted it just sitting around. Thanks for your reply Mike

[lynnbilodeau]

Beware that almost every aftermarket fuel pump made recently has too stiff a spring and therefore too much pressure.   Over 7 psi and you are asking for trouble.

Invest in an inline fuel pressure gauge and check it before you run it.    I had three in a row register over 10 psi.

[adjudimo]

The 396/325 I took out of my 67 stayed around 5.5 lb pressure when it was in the Camaro. I have heard others in my area also complain about the newer pumps running high pressure as stated above.