Did any of you horsepower calculator guys ever use this

Like most quickie formulas, there will be combos where it’s close, and combos where it’s not really close at all.
The problem with all of them is, when do you know it’s wrong?

Since there are often “adjustments” that can be made to alter the results, that usually means someone is guessing about something related to what/if an adjustment is made.

Well, once the guessing begins..... the result can pretty much be whatever you want it to be.

But, as far as the calculator this thread is concerned, I’ll once again say that it seems to be the farthest off of any I’ve tried for any type of “racy” build.

It’s reasonably close on something like a 350 SBC with an RPM intake, E street heads, and a Thumper cam.