fuel pump pressure question

[MrLee]

Greetings All, My original fuel pump gave out on my 305. I want to install an electric pump temporarily as I must move my truck to a new location. Does anyone know the psi necessary for the 305 so that I purchase an the right electric pump? I will look later for a proper manual replacement pump. Thanks in advance. Lee Wengrzyn in Lehigh Acres . Florida

[Funky61]

Hello Mr Lee,

I'm using this Carter 4070 model now; puts out 6 psi and you know when it's running. I have a Holley 500.

http://www.summitracing.com/parts/crt-p4070/overview/

But they do sell the cheaper Mr. Gasket electrics at the AutoZone that may get you buy.
How far are you moving it and what carb do you have?

[MrLee]

Thanks for the reply. I'm only moving my truck 20 miles as I must put it in storage for awhile. I have the original carburetor on the 305 and up to this pump problem, everything ran great. I've considered going to the Holley to better the current 10 MPG but I have no plan to do so. It already has dual exhaust. My GMC is 1964 and has a camper that I use within the borders, so far, of Florida. It's a great machine. A parts guy at Autozone told me that a lower psi was better for this truck as it is old but I have no faith in counter guys unless I know they are good mechanics. They sell an electric that is 4-7 psi and a more expensive one rated 5 psi. I don't know.

[Funky61]

MrLee, my manual calls out for 5-6 psi on the factory pump.

[MrLee]

Thanks. I'll get the better pump at 5 psi.