Fuel pump requirements

[HP HUNTER]

Originally Posted by Rory McNeil

Whats the combination? A car with a Holley 4 barrel is much easier to keep fed than say a Quadrajet on an otherwise identical application. A single Holley "Blue" electric pump should be more than adequate for a car like that with a Holley carb. My bracket car with a Holley 650 carb ran 10.2ETs at 130 MPH, 1.36 60 foot times with a single Holley blue, with a stock gas tank and 3/8" steel fuel line. I know a few guys with similar cars that run similar times with a Carter mechanical pump, but very unlikely a QJet car would get to 1/2 track under power with the same fuel system.

1320/130=10.15 and thats just a jumping off point. In the 80s I had a 68 Chevelle with a Holley pump that ran 10.70s, stalled the fuel on the launch, changed the spring to the heavier Moroso spring, with no other changes the car went 10.48, and I suspect that still wasn't enough. Although I will say this car left extremely hard for a 10 sec car, which had a lot to do with why the fuel system was taxed. As far as the Q-Jet goes, I've got stories if anyone interested, I've seen this tried, no way will this work-ever.