.008” is way too much interference fit. Just for reference, an ATI super damper (harmonic bal) specs at .0008” to crank. In my opinion, there should not be any powdercoat on the inside pulley to shaft surface.

Last edited by Chargerfan68; 02/10/22 10:41 PM.
1.50 60Ft. , 10.75@ 127MPH Hauling 3900 LBS.