Thread: Fuel Pump Question
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02-28-2019 04:17 PM #1
Fuel Pump Question
I got a 55 Chevy truck that I am working on. It had a stock 350 an I have put a 383, 430 hp. Someone put a electric fuel on it so I just left it on there. Cranks good idles good bout 6 psi give gas it drops down to bout 4 psi. Bad pump or just not enough GPH ?
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02-28-2019 06:40 PM #2
Not much information really but, assuming it's a quadrajet or holley. 4 psi is all you really need for average driving. The pressure drop could be many things. Undersized fuel lines, hoses, perhaps a kink or dirty filter/ sock in the tank...
But unless you're towing or doing long stretches of wide open throttle, I'd doubt you'll notice the carb starving.
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03-01-2019 04:30 AM #3
It has a Holley DP, 3/8 fuel line. Round cylinder type pump mounted right above the tank.
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04-16-2019 05:53 PM #4
martinbrown79, how about at least a little information... OK, we know it's a chevy. How about year, model, motor size, tranny. Carbed or F.I.?
When do you experience the problem?
Happy Birthday to Glenn Sexton, one of the most knowledgeable and helpful guys for GM engine information and hot rod knowledge. Enjoy your special day, Glenn!
HBD Glenn!!