Aftermarket fuel pump question.
Thread Starter
Burning Brakes
Joined: Oct 2003
Posts: 1,018
Likes: 86
From: DALLAS/FT WORTH TEXAS
Aftermarket fuel pump question.
Can I use an Edelbrock fuel pump that does not have a return fuel line port? The factory fuel pump has 3 ports, the Edelbrock has two. Please help??
Race Director
Joined: Jul 2001
Posts: 15,892
Likes: 42
Yes you can use it, but you can also smash your thumb with a hammer in you like. Both are dumb ideas.
The third port helps reduce or eliminate vapour lock and the stock pump puts out the correct flow and pressure for just about any engine.
The third port helps reduce or eliminate vapour lock and the stock pump puts out the correct flow and pressure for just about any engine.
Le Mans Master
Joined: May 2006
Posts: 9,993
Likes: 1,136
From: League City Tx
I have a Summit fuel pump on my stocker, no return line hooked up, been like this for a couple years and 5k miles, no problems at all......I live in Houston where its 100* and I run the AC, car running 200*+ and never a hot start/vapor lock problem....
Le Mans Master
Joined: Dec 2003
Posts: 5,727
Likes: 38
From: Fremont CA
WOW! what a great bunch of advice just for the record, the Holley carb equipped Vettes (L-88, 427 tri-power, LT-1, LS-6) NEVER had any vapor return lines from the fuel pump on them. I run the Carter NASCAR fuel pumps on my HP Vette build-ups because I think they are better built that the A/C style that Edelbrock and Holley sell but, I have noticed, Edelbrock and Holley are starting to offer the Carter style pumps in their recent catalogs. I would also change the fuel pump push-rod out for a lightweight one from ARP/Comp Cams or other vendor. Here is a link to the one I run on my SB Chevys, notice it dosen't need a fuel pressure regulator and it has a big GPH nuber to feed high HP motors. Link: http://www.summitracing.com/parts/CRT-M60969/
Remeber, put away all the tools ESPECIALLY the hammers when your out in the garage downing Molsens with your buddies
Remeber, put away all the tools ESPECIALLY the hammers when your out in the garage downing Molsens with your buddies
Race Director
Joined: Jul 2001
Posts: 15,892
Likes: 42
So for you guys that love your aftermarket pumps, what did you actually gain by downgrading from a three port to a two port?
I can think of a half a dozen little re-engineering projects to remove stuff on my car, but not one of them will gain me anything so I won't do them. Just like smashing my thumb with a hammer.
And it's spelled Molson, not Molsen, eh.
I can think of a half a dozen little re-engineering projects to remove stuff on my car, but not one of them will gain me anything so I won't do them. Just like smashing my thumb with a hammer.
And it's spelled Molson, not Molsen, eh.
Safety Car
Joined: Oct 2004
Posts: 3,926
Likes: 739
From: Youngstown Ohio
So for you guys that love your aftermarket pumps, what did you actually gain by downgrading from a three port to a two port?
I can think of a half a dozen little re-engineering projects to remove stuff on my car, but not one of them will gain me anything so I won't do them. Just like smashing my thumb with a hammer.
And it's spelled Molson, not Molsen, eh.
I can think of a half a dozen little re-engineering projects to remove stuff on my car, but not one of them will gain me anything so I won't do them. Just like smashing my thumb with a hammer.
And it's spelled Molson, not Molsen, eh.
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Drifting
Joined: Jul 2007
Posts: 1,889
Likes: 23
From: Kansas
When I changed to a late model 330 H. P. crate motor, it had no holes for a factory fuel pump. I had no choice, or no money, to have a machine shop put them in. I've run it for a few thousand miles and I blocked the return line and have had no trouble either. Have a great day. Gene
Race Director
Joined: Jul 2001
Posts: 15,892
Likes: 42
I have Carter's version of the Nascar superspeedway mechanical fuel pump (170 gph, no external regulator required). This pump, and almost all aftermarket pumps, have only the 2 ports. This pump is definitely not a downgrade. What I gained (and what everyone gains) is the ability to feed a higher horsepower engine without having to install an (additional) electric pump and regulator. My return line has been blocked off for years and I have no problems. Adding an aftermarket pump, or doing " little re-engineering projects to remove stuff..." always yields some type of gain for a performance enthusiast..... Definitely not to be equated with your thumb smashing.
