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Discussion in 'High Performance Modifications' started by Mwilson, Nov 3, 2017.
Never heard of air bleeds
They are probably using $$$$ internally-regulated fuel pumps in the Pro-Mods.
I'll also note, some guys run a "surge tank" for fuel return.
They prevent fuel starvation and can serve as a close to the carb fuel return.
When doing EFI conversions we used to use them to retain the stock fuel system and step-up fuel pressure to EFI levels.
It's a very easy fix if you need it. Many, if not most probably don't, but with the monster pump I did.
I could not stop the damn thing from popping on the launch from all that fuel hitting.
You get a N2O jet fitting and some #20-30 jets, use the smallest one you can that controls creep.
You use an existing gauge port or add one at the regulator, and just run all those -3 lines into a -6 return to the cell.
Obviously on a car like mine, it's easy, the cell is a foot away from the regulator!!!!
I have no clue what a modern Pro-Mod with 4-6 stages are doing,
but it's worked perfect on my antique Pro-Mod and my 10" tire car.
Haven't tried this yet. I was under the impression that the hole for the return inside the filter itself is a bit smaller than the fitting for the return line, (weep hole style). My car has a 3/8" line from the tank all the way thru the entire system, pump is Edlebrock putting out 5.5psi, and feeds my 383 stoker just fine for street use. 1/2" line seems excessive unles you're racing the car...after all, you're just keeping the carb bowls full.