If it has the wrong rotation, the offset on the wristpins will be wrong. GM used an offset on the piston wristpin on a some of their engines to counteract piston slap.


1951 GMC 1 Ton Flatbed -- It is finally on the road and what a great time I have driving it!
1951 1 Ton Completed


My Chevy Master 4 Door is on the Road!