My manager and I got into an argument about the block size of GM 350's.(yea, we're that bored) So my question to ya'll is: Is a 350 a big block or a small block? He keeps insisting that he had a 350 BB in his car at one time but I think its bs. I've read that back in the 60's they had a 348 big block but thats the only one ive every heard of. But generally they are small blocks correct? I've at least got him to admit there is a SB 350 which he was denying at first. Anyways any help is appreciated.