General Category > Quadrajet Carb Talk and Tips

fuel delivery

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formula462:
Could getting a better mech fuel pump improve engine performance? I just have cheap parts store pump and it seems the engine starves a bit on top.
I have a Cliff built qjet and couldn't be happier..so long holley

Cliff Ruggles:
The fuel pump and fuel delivery to the pump must be on par for the power of the engine.  What is your application, and fuel supply set-up?.....Cliff

formula462:
.030 455
Rpm intake
comp xe 268
6x #4
9.2 comp.
larger ex valves
1 5/8 headers straight to mufflers
stock fuel lines
stock fuel pump
automatic
carb built to these specs by cliff

Cliff Ruggles:
455's are difficult to feed with stock pumps and stock fuel lines.  If it noses over on hard runs, you will have to upgrade the fuel delivery system accordingly.  I couldn't feed a mild 428 in my car with the stock fuel system.....Cliff

formula462:
Ok thanks Cliff any suggestions on fuel delivery setup..hopefully being able to stay with mech.pump

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