Electric Fuel Pump on a Carbureted 350 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

veinbar · 04-24-2007, 01:10 PM

I am running a rebuilt '89 chevy 350ci block, "906" vortec cylinder heads, and an aluminum intake with 750cfm Q-Jet retrofitted into a 1976 G10 Sportvan. This is the first vehicle I have ever owned without a mechanical fuel pump so I'm a little lost. I hastily bought a cheap electic fuel pump that pumped at 4psi, and it worked well, but only for about three gallons. It went out, and I replaced it with a fuel pump that can pump up to 9psi. Between 5-9psi. The guys at O'Reily's suggested it. I installed it yesterday, and my van is constantly stalling or sputtering.

My idea is to take the pump I have now, and replace it with a lower psi pump, because I'd hate to buy a $40 dollar regulator, which is almost the cost of the pump itself.

Any knowledge you can throw my way on the issue would be much appreciated. Thank you.

jchav62 · 04-24-2007, 01:41 PM

5-9 psi seems a little much to me for a carburetor. I run a Purolator 4-5 psi unit on my truck and have had no problems. I think I paid around $60 for it. I've heard that crap in the tank would cause electric fuel pumps to go out. I would suggest a fuel filter before and after the pump..

veinbar · 04-24-2007, 03:30 PM

I do have an inline fuel filter before the pump, so it should be catching whatever trash might be passing through the line. Is your fuel pump available at local auto part stores. I might go pick it up if it is. I just want this resolved. Thank you for your help.

jchav62 · 04-24-2007, 04:45 PM

Quote:

Originally Posted by veinbar

I do have an inline fuel filter before the pump, so it should be catching whatever trash might be passing through the line. Is your fuel pump available at local auto part stores. I might go pick it up if it is. I just want this resolved. Thank you for your help.

I got mine for the local Checker Auto...here's the link...

http://www.partsamerica.com/productd...goryCode=3339K

69BBsuburban · 04-24-2007, 05:54 PM

Most carbs can take 7 psi of pressure before the pressure overcomes the needle and seat.
Some of the small, cheapie pumps will put out the psi but not the volume.
Carter electric pumps are really good. The street versions are preset at @ 6 psi
Carter fuel pumps

jchav62 · 04-24-2007, 07:19 PM

I've heard nothing but good about the Carter pumps.....

04-24-2007, 01:10 PM	#1
veinbar Registered User Join Date: Mar 2007 Location: Austin, TX Posts: 292	Electric Fuel Pump on a Carbureted 350 I am running a rebuilt '89 chevy 350ci block, "906" vortec cylinder heads, and an aluminum intake with 750cfm Q-Jet retrofitted into a 1976 G10 Sportvan. This is the first vehicle I have ever owned without a mechanical fuel pump so I'm a little lost. I hastily bought a cheap electic fuel pump that pumped at 4psi, and it worked well, but only for about three gallons. It went out, and I replaced it with a fuel pump that can pump up to 9psi. Between 5-9psi. The guys at O'Reily's suggested it. I installed it yesterday, and my van is constantly stalling or sputtering. My idea is to take the pump I have now, and replace it with a lower psi pump, because I'd hate to buy a $40 dollar regulator, which is almost the cost of the pump itself. Any knowledge you can throw my way on the issue would be much appreciated. Thank you.

04-24-2007, 01:41 PM	#2
jchav62 1962 C-10 Join Date: Apr 2005 Location: Las Vegas, New Mexico Posts: 4,978	Re: Electric Fuel Pump on a Carbureted 350 5-9 psi seems a little much to me for a carburetor. I run a Purolator 4-5 psi unit on my truck and have had no problems. I think I paid around $60 for it. I've heard that crap in the tank would cause electric fuel pumps to go out. I would suggest a fuel filter before and after the pump.. __________________ Joseph Chavez "See the USA in a Chevrolet!!" ......................_____ .........________//__{\_____ ,,,,,,,/__(O)___//___/__(O)_/ 1962 C10 Shortbed Fleetside 327/th350 GV overdrive 1974 C10 Longbed Fleetside 350/th350 "The Trash Truck" 1999 Chevy 2500 OBS, Longbed 5.7/4L80E 4x4 2015 GMC Sierra SLE 1500 4x4 Last edited by jchav62; 04-24-2007 at 01:41 PM.

04-24-2007, 03:30 PM	#3
veinbar Registered User Join Date: Mar 2007 Location: Austin, TX Posts: 292	Re: Electric Fuel Pump on a Carbureted 350 I do have an inline fuel filter before the pump, so it should be catching whatever trash might be passing through the line. Is your fuel pump available at local auto part stores. I might go pick it up if it is. I just want this resolved. Thank you for your help.

04-24-2007, 05:54 PM	#5
69BBsuburban Right in front of you. Join Date: Jan 2006 Location: Roy, Wa Posts: 584	Re: Electric Fuel Pump on a Carbureted 350 Most carbs can take 7 psi of pressure before the pressure overcomes the needle and seat. Some of the small, cheapie pumps will put out the psi but not the volume. Carter electric pumps are really good. The street versions are preset at @ 6 psi Carter fuel pumps __________________ Pinstriping by Josh '78 Chevy Silverado SWB (lowered, 454) '90 Chevy Sport Truck '68 Dodge Charger R/T 1930 Ford Model A

04-24-2007, 07:19 PM	#6
jchav62 1962 C-10 Join Date: Apr 2005 Location: Las Vegas, New Mexico Posts: 4,978	Re: Electric Fuel Pump on a Carbureted 350 I've heard nothing but good about the Carter pumps..... __________________ Joseph Chavez "See the USA in a Chevrolet!!" ......................_____ .........________//__{\_____ ,,,,,,,/__(O)___//___/__(O)_/ 1962 C10 Shortbed Fleetside 327/th350 GV overdrive 1974 C10 Longbed Fleetside 350/th350 "The Trash Truck" 1999 Chevy 2500 OBS, Longbed 5.7/4L80E 4x4 2015 GMC Sierra SLE 1500 4x4

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