Quote Originally Posted by glennsexton View Post
As to a double pumper - well, sounds cool to say you have one, but most people have no idea what the double pumper brings to the equation. The 600cfm you've got probably doesn't perform as well as the Q-jet that the 305's came with when optioned with a 4 barrel.
Glenn, thanks for your insightful and intelligent reply. If a guy will take a little time to read up on this stuff, he'll find that the carburetor manufacturers will recommend a vacuum-secondaries carb if you're using a converter that stalls under 3000 rpm's. Over 3000, a double pumper can be used to advantage. Agree with the Quadrajet, best 4-bbl carburetor ever designed.