Time for more details about the engine.
Is it a stock lower end, or is it aftermarket pistons? What heads are on it and were they used, rebuilt used, or some kind of new replacements?
Bobzilla, Motor has stock pistons engine had 78,000 on it, stock heads upgraded with hughes valve springs. im going to check all the exhaust pushrods because there at .533 lift and compare them to the intake which is .507 see which are bent