i just got my motor and we are expecting AT LEAST 600-700 RWHP, with a turbo setup. i already have a 255 intank walbro but what is the best inline pump i can run using my stock fuel lines, so basically one that will bolt right in?

 

prob aeromotive. but i could be wrong

 

Aeromotive is a good one and Weldon is another. I might suggest if you put an external pump on you remove the in tank one. The external pump should be large enough to support your HP so if this is so it will have to pump more fuel through the smaller pump in the tank. This would be a restriction. If the in tank pump dies then the external one will have to work harder to suck through it.

Good Luck

 

Adding another pump inline or in series will not give you any more volume, which is really what you need.

I remember a few good threads from years back that you might try searching for.

-Scott.

 

If you already have one Walbro why don't you make a custom dual walbro setup and buy one of Lonnie's(Racetronix) Wiring Harnesses. They're supposed to be good to 1000HP. I just made a write up on here about two weeks ago in the Forced Induction section.

I'm pretty sure that you will need upgraded lines with the Aeromotive A1000 or Weldon because it will pump more than the stock return lines and fuel pressure regulater can handle.

I have a Procharger Inline Pump that will bolt right in for sale but I doubt it will support 700HP.