I will agree there is no way to know until the engine is torn apart and exploratory surgery is performed. Which is something I am just not willing to do at this time. The motor the way it is dynoed out in a way to make me happy for now. We decided to put it in the car with our trans, rear end , ignition system, headers etc. tune up the system to peak performance and see what we got. It might just be a beast the way it is. I did take the valve covers off and found out it has comp cam roller rockers in it and comp cams push rod guides in it. So it most likely has a comp cam in it already. Dropped it in the other night and now the conversion from 1970 to 1987 begins. hope to have it running within a few nights.