Hey Gang,

Just getting started with the quest to eventually convert my BBC wagon to EFI. I have the intake setup and am leaning toward mating it with the Holley HP 550-604 ECU kit. I still have a lot to learn about the fuel and possibly ignition system changes required, but figure I'm in good company here. Doug has already answered the first of many questions I'll likely have along the way.

Just curious, has anyone tried (or considered) one of these fuel pumps for EFI (link below)? Seems like a practical solution to maintain most of my existing fuel system plumbing, but haven't read anywhere so far of its use. The description states that it "only flows as much fuel as the engine requires", but I'm skeptical...seems like a downstream regulator would still be needed.

http://www.ebay.com/itm/Race-Pumps-Piston-Fuel-Pump-EFI-Big-Block-Chevy-/180545168598?vxp=mtr&hash=item2a0954a4d6

TIA for any input,

Hey Gang,

Just getting started with the quest to eventually convert my BBC wagon to EFI. I have the intake setup and am leaning toward mating it with the Holley HP 550-604 ECU kit. I still have a lot to learn about the fuel and possibly ignition system changes required, but figure I'm in good company here. Doug has already answered the first of many questions I'll likely have along the way.

Just curious, has anyone tried (or considered) one of these fuel pumps for EFI (link below)? Seems like a practical solution to maintain most of my existing fuel system plumbing, but haven't read anywhere so far of its use. The description states that it "only flows as much fuel as the engine requires", but I'm skeptical...seems like a downstream regulator would still be needed.

http://www.ebay.com/itm/Race-Pumps-Piston-Fuel-Pump-EFI-Big-Block-Chevy-/180545168598?vxp=mtr&hash=item2a0954a4d6

TIA for any input,
you'd still need a fuel pressure regulator. I would never run a mechanical EFI pump. It really doesn't solve any issues, other than a race deal that may need an incredible amount of fuel. It will still need a correctly baffled gas tank, any air sucked in even briefly will immediate affect the engine. It's expensive, and I would think starts would be longer if you had to build up pressure; an electric is primed and up to pressure pretty much instantly.

We used the Holley billet pump for my setup. I haven't heard it yet but Mike says it is pretty quiet.
http://i104.photobucket.com/albums/m187/fshrmn_2006/DSCN1457.jpg

$319 when I can get an electric for $150? You should upgrade your alternator for the rest of the EFI system anyway so you would have any additional power you need for the electric..

Can't see it.

I would also wonder about the cam on the crank as the increased pressure (150 lbs) on the push rod might make the wear worse..

Ron

Thanks for the feedabck Guys,

Sounds like a number of good reasons why this is not a popular choice of EFI pumps. I've heard good things about the Walbro inline pumps, but that pic of Mike's Holley fuel system certainly looks up to the task as well!

So, I take it that a sump or baffled tank is still necessary for an external inline pump, correct?

Thanks again,