[mike leech]

Originally Posted by KO

My 2 cents, not trying to argue or pick sides but my observations working in and around race cars for a couple years: area under the curve is more important that peak, the engine spends more time under the peak than at the peak. Also, nitrous is a power ADDER, a 100 shot is 100 everywhere throughout the HP curve. 500HP @ 8000 RPM will out run 500HP @ 10000 RPM anytime especially with a torque converter equipped car.

Right now I'm building a car to run in heads up class, NA 7#/CID, car is now 499.999 CID and 3500#, will a smaller engine at less weight be faster?

Rule of thumb: it's OK to beat your wife with a stick as long as it's no wider than your thumb, its true look it up

you will struggle at that weight against cars that are 350 lbs lighter and making power at high rpm NA. you will see.

this again makes my point. hp is hp was the comment. "with a power adder the 100 extra is everywhere" the peak number is not the holy grail. the average will affect the acceleration more. rpm in the range i gave will be faster 9 outta 10 times if not more NA.

800 peak@ 6500 will get whooped by 800 that peaks at 9000. The whole usable curve is way above 5250 and the average power will be higher. The engine that peaks at 6500 has part of its power curve at or very near 5250 so its average will suffer. Its math guys, not emotion.