Did any of you horsepower calculator guys ever use this

PRH said

Interesting. I just plugged one into the dynamic comp calculator and it came out right on.

Edit, I just tried one with a dome piston....... that came out correct too.

Click to expand...

Yeah, I ran it twice....maybe I fat fingered somethi.......... I'm a doof....I put in a negative sign for my valve reliefs (should be positive #). Now it works (13:1)

Looks like I'm 603hp or 581hp depending on induction....both sound ball park.