Little more info........The engine builder put this balancer on a 4.75 stroke Callies crank. Dyno'd at 1000hp. I am not comfortable using it....going either Fluidamper or ATI. Wait....I was "TOLD" it was a Callies crank..... <img src="/ubbthreads/images/graemlins/1343795-scratchchin.gif" alt="" />

Last edited by steve660; 05/02/15 05:55 PM.
PSO headed 632 from MM. Cracked cylinder, loose valve seats, low oil pressure, low cylinder pressure.
..... Now its a door stop....