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View Full Version : Is Electric Fuel Pump Necessary with Holley 500?

GBCustoms
October 14th, 2016, 06:50 AM
Hey guys, can the stock mechanical fuel pump on my 351E keep up with the Holley 500? The PO put a spare Holley he had lying around the shop on it, but never got to test it. I am hoping to get my spark issues lined out this weekend and start this beast up. Should I go ahead and plan on upgrading the fuel pump too?
FetchMeAPepsi
October 14th, 2016, 01:28 PM
The stock fuel pump will keep up with the holley just fine. You don't need an electric unless you just prefer it.
Funky61
October 14th, 2016, 03:00 PM
The recommended pressure is 5-7 for the Holley, so like Fetch stated, you should be fine.
I kept having new fuel pumps go bad on me (maybe shelf stock was too old?) so I went electric.
TJ's GMC
October 14th, 2016, 03:13 PM
I prefer electric, but the stock should hold up. :thumbsup:
GBCustoms
October 18th, 2016, 03:57 PM
Awesome! Thanks guys. I wasn't getting any fuel and the pump looks rather new. So of course I take the pump off, manualyl pump the lever and can feel the suction on the line.Check the lines, They are Clear. Check fuel level in the tank, Plenty. Why no fuel?:banghead: So I finally use my brain and start with the simplest answer. The PO had the fuel lines reversed on the pump.:pullinghairout: I'm an Idiot!:teehee:
surfamtn
December 18th, 2016, 12:10 AM
Actually.... I think you just pointed out that the PO was the idiot and you fixed his mistake!
kchampagne
December 18th, 2016, 12:51 AM
I've been there done that!
1972RedNeck
December 18th, 2016, 01:28 AM
Awesome! Thanks guys. I wasn't getting any fuel and the pump looks rather new. So of course I take the pump off, manualyl pump the lever and can feel the suction on the line.Check the lines, They are Clear. Check fuel level in the tank, Plenty. Why no fuel?:banghead: So I finally use my brain and start with the simplest answer. The PO had the fuel lines reversed on the pump.:pullinghairout: I'm an Idiot!:teehee:

So does the stock pump keep up?
GBCustoms
February 8th, 2017, 04:12 PM
sorry for the late reply! Haven't had it on the road yet, but it keeps up just fine when i am running the motor sitting still.
Quigley
February 9th, 2017, 12:58 AM
If your float is set right, and your pump is good you won't have any problems. Dave :ok: