Still, with the modern 2bbl Holley and modern idle circuits, power valve, increased cfm, I would think the improvement would still be noticeable over the Rochester's "dump the fuel in" 1 barrel. The cfm might not be as improved as opening up the top of the manifold as Truckedup did, but you still benefit from these other improvements. Wouldn't you?


52 GMC 3/4 ton pickup
68 Big Block Vette
68 455 Firebird