There was a few things but the worst of all was the rings butting and breaking the gap open wide. The engine had about 50 Dyno pulls on it though. The guy I paid to assemble it ( long story) just overlooked a lot of stuff. Head gaskets hung in the bore on some cylinders, the pistons are out of the deck .010 with .039 thick gaskets, the pistons were kissing the heads , the oil pump was partially blocked off from an fitting being in too deep. Cam Timing was advanced like 10 degrees, the rocker shafts broke because he put in the wrong bolts. Just a bunch of stuff .
