I know its not a g-body but im already registered here and i figuerd you guys would know. Im a chevy guy so i dont know to much about these motors. I figured out the problem, its a broken cam. Believe it or not i got it to start off of the first 2 cylnders, surprised me. Where is the oil pump located? Is it in the front near the distributor or is it ran off of anything else. I have read several articles on GM makeing weak cams but i dont know which years. Also do you guys know what year motors are compatible. Sorry for all the questions just dont want to have to do a complete rebuild on this motor.