I did the search nothing came up. I have the chance to get a 350 out of a pontiac for cheap. Does bell housing's bolt up to a chev 350 :confused: sorry for the crappy Q but i do not know.

No, it does not. Buick, Pontiac, Olds, and Caddillac engines use a different bell housing pattern from Chevy. There are adapter plates available, but the best way to go is just use a BOP TH400 (or better yet, find a Chevy motor).