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Question: Electric Fuel Pump/Bypass Regulator Options


Well-known member
Dec 30, 2002
Dallas County, Texas
'75 Modified Red Ragtop: "LEFTLN"
Wow. It's been awhile since I was here much - but I started getting my beastie going in November to December, in what's been a $7-8K three season most-of-car repair or upgrade, instead of a $1750 month long install-the-new-motor project.

One of the many things new to this edition of Burnham's Folly is the electric fuel pump. I went with a Holley Black and one of their cheapy deadhead (non-bypass) regulators. The pump burned up in less than 50 run hours and I have replaced it with another, which is no doubt headed for the same fate.

Last weekend I tried to upgrade to one of their 803BP (IIRC) bypass regulators, but could never dial the pressure below 10psi (briefly) at idle and more typically 12psi. I don't know if it was a defective regulator or the use of the 5/16" or 1/4" factory return or vapor return line instead of the expected 3/8" -1/2" (or 6AN to even 10AN) ones, but I returned to my original deadhead unit to maintain 7-8psi at idle and 6+ at WOT.

Never being one to give up on a stupid idea without bouncing at least a few checks, I am now looking at the Aeromotive and similar TrickFlow regulators from a place like Summit, Jegs or Doug Herbert.

While I'm at it, I'm open to changing the fuel pump make or design to a quieter one that has a better rep than Holley's products of late. I really do not want to run a new line, even though I could, and especially don't want to drop the damned tank yet again. (I replaced the tank with a non-bladdered one about 2 years ago, which *STILL* only holds 17gals, not the 26 expected. (A custom designed one going much deeper to where the spare used to be is in the works in the mid term future.)

Any experiences, comments or any such thing on the current various electric fuel pumps and regulators would be appreciated. BTW, the motor is a 490-525hp/500-540ft-lb solid roller 413, Holley 750 Mech DP, with no power adders, although all parts were selected for a mild routine nitrous setup.

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