454 365

[Jim Hanig]

[QUOTE=HP HUNTER;531873]

Originally Posted by Jim Hanig

1971 Buick 455 403 intake, I've done extensive flow testing and dyno testing with this intake bolted to my 661/149 455 heads. I've also tested the 1970 low rise BBC intake on the dyno and flow bench, this intake unmodified made 532 HP on my 9.3 compression 467 with a 228 @ .050 cam with ported peanut port heads. I feel the the BBC intake has more cross section which shows by the feet per second.

It may have more cross section but the Buick is bigger in volume ill bet.