454 365

[HP HUNTER]

[QUOTE=Jim Hanig;531808]

Originally Posted by HP HUNTER

"very good ones make 600 range "


I would open this question up to the whole forum, if you have a A/SA 1969 Nova with a 375 HP 396 stick and it runs 135 MPH @ 3470 in a 29.00 baro, How much HP does this take?


With 245 CFM @ 28 inches it would have to make in the 530s for HP corrected STP. My Buick flowed 213 CFM @ peak lift and made 474 HP, theres no way that BBC intake manifold is worse than the Buicks.[/QUOTE What buick are you talking about? The 455 is way better than the 365/454 intake.

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.

[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.