The heads

I cleaned the head today pulled the valves and checked clearances, this is a good head well maintained all within specs. fter some research the pitting on the cam is not an unusual thing ,seems it happens often and as long as it is on the backside, mine is, there is no issue. The problem seems to have been in the head gasket ,it was leaking aitfreeze past the holddown bolts and also an intake leak after the carb intake in the manifold. all this bares out based on how the engine was running. This created a lot of back pressure and blew my rear seal out at 5k RPM I still have to repair the seal. so the drive shaft comes out and since im down there anyway lets look at the clutch plate. FUN<FUN<FUN