Originally Posted by roadkill2

It don't matter! You really don't care . .

"Horsepower" is one of two things. A measurement determined by testing the actual output with a Dynometer, or a term used at the Bar when trying to impress people who don't know any better . .

If you're a racer (or engine Builder) and build an engine for a specific purpose (Like Quarter Mile Drag racing, for lack of a better one) then ET is (or should be) your primary concern.

Doesn't matter whether you're racing heads up or Brackets, it's ET or the potential to get to that ET that you're concerned with . .

And, based upon both experience of yourself, or those who are relatively successful at the type of racing you're doing, ascertaining the build and it's potential results should be, literally, empirical . . .

The "Fine Tuning" for good results and engine longevity belong to the user . . . and still have little to do with the spoken word "Horsepower" . . .

Jus' sayin'