My brother has a line on a deal of a steal on a sbc and 4 speed from a neighborhood guy that we've known for a while. He's kinda burnt so we never took much stock in his ramblings until he started dropping off parts. He has a sbc that he pulled out of a 65 vette for a 51 chevy he had back in the day. He never got around to building it and this motor and trans have been sitting in a garage for who knows how long. He gave my bro the casting #'s off the block and I did some checking, it is either a 67 327- 210-350hp, a 67 350-295 hp, or the motherload 67 302-290hp. My question is how else would you know? Anyone know the head casting #s for the above motors? What should we look for to tell the difference between them. It's a done deal either way, but if it's the 302 it would most likely go for sale to some camaro guy with extra $$$ for what he needs on his and his wife's cars.