yes a 71 with Qjet came with a return line. Suggest AC Delco replacement MECHANICAL fp.
Which electric fuel Pump should I use
Thread Starter
Instructor
Joined: Jul 2003
Posts: 107
Likes: 0
From: Salisbury NC
Which electric fuel Pump should I use
Have a GM crate motor, SB 350 with vortec heads, 330 HP model. I have mechanical fuel pumps failing left and right, and want to replace it with an electric fuel pump. Which fuel pump do you suggest?
Former Vendor
Joined: Apr 2009
Posts: 766
Likes: 3
From: Charlotte North Carolina 704-394-5150
What name brand are you using that is causing them to go out on you? Also are you using the correct formed fuel "s" hoses so you do not cause the supply hose to collapse and starve the pump for fuel. I use the AC Delco pumps and do not have a problem with them, even on the Hi-perf engines I install from time to time. You have to be careful with an external electric fuel pump because it can get hot and cause vapor lock when driven for extended periods of time. So you may have to spend some $$$ on a good one. Also a fuel pressure regulator will need to be installed if you go the electric pump route to prevent damage to the needle and seat.. We are in the same area of the country and I know it gets "hot". You didn't mention what type of carb you have and its CFM and if you are just trying to pump way to much fuel in an engine that doesn't require it. Do you have headers? You didn't mention on how the pumps are going out also. Are they leaking? Or did they just stop pumping fuel? How did you check this event? "DUB"
Instructor
Joined: Jan 2006
Posts: 228
Likes: 1
From: Warwick New York
Any electric fuel pump you go with you will have to watch the pressure that it puts out or install a fuel regulator. I used a 82 in tank and a holly regulator with a fuel return. Does a 71 have a return line. For carburetion you should stay around 5 psi. any higher and you can blow the seals and gaskets
Drifting
Joined: Aug 2005
Posts: 1,682
Likes: 3
From: League City TX
Mechanical pumps typically dont fail often. You may have something else going on.
If you are commited to the idea of an electric pump though, take a look at the Mallory pumps.
They are reliable and much quieter than many others. The 70 & 110 gph models dont require an external regulator.
If you are commited to the idea of an electric pump though, take a look at the Mallory pumps.
They are reliable and much quieter than many others. The 70 & 110 gph models dont require an external regulator.
Team Owner
Joined: Jul 2004
Posts: 40,412
Likes: 792
From: Redondo Beach, California
I have an Aeromotive Street and Strip electric pump. I use one of the old traditional Holley regulators. Edelbrock makes a bracket to mount the regulator on and the bracket mounts under the carb. Edelbrocks' outfit comes with two steel hoses from the regulator to the carb.
A pricey thing you can do also is buy a Aeromotive speed controller. It senses engine rpm and varies the drive voltage to the pump, so the pump doesnt run at full power when the engine is idling. The speed controller also turns off the pump when you turn off the engine.
A pricey thing you can do also is buy a Aeromotive speed controller. It senses engine rpm and varies the drive voltage to the pump, so the pump doesnt run at full power when the engine is idling. The speed controller also turns off the pump when you turn off the engine.
Le Mans Master
Joined: Sep 2001
Posts: 7,739
Likes: 630
From: Unreconstructed, South Carolina
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Le Mans Master
Joined: Jun 2004
Posts: 6,231
Likes: 65
From: Seattle WA
St. Jude Donor '14
I agree - you really don't need an electric pump or frankly want all the work it takes to get the set-up right. There's something else going on here.
Virtually any of the brand-name aftermarket pumps for street use (output of 7 PSI or less) will be fine...as will a stock AC Delco pump at that power level.
Virtually any of the brand-name aftermarket pumps for street use (output of 7 PSI or less) will be fine...as will a stock AC Delco pump at that power level.