This is a disassembled 350 chev motor that was running just fine (and strong) in my father in law's 55 (obviously not original equipment) chev when he decided that he needed a new engine to go with the paint job. All I know is that its an old engine by looking at the oil filler and filtermount. I am posting this for him so don't e-mail me back. Call him, Tom Long at 519-934-.