What should I expect from 450hp?

B3422w5 said
there is about 3 to 4 tenths difference at the track.
Ken Hensley and i had that conversation years ago, its proven correct on many combinations, including a couple of nine. The worse the heads, the less the difference obviously. I have swapped mild eddies and seen the difference Hensley mentioned
Thats a significant difference. Likewise, making a gear change one step, say 4.10 to 4.30, 3.23 to 3.55, etc, rarely makes much difference at all, and if it does, its minimal

My main point wasn't there gonna be the exact same, Just seems like he started of with 340 and 3.73 and built a 408 for more torque but gave that advantage by going with 3.23 so it equaled it out a bit. Built a bigger engine basically not to go faster but make power lower to have a more streetable gear. Even though it still should be smoking the tires with a 408 and 3.23 my 360 smokes the tires with 2.94's.