what engines will bolt up?

will a big block motor bolt up to the transmission i have now running a 350? what engines bigger than a 350 bolt up to my current automatic transmission?

I am assuming you currently have a small block chevy setup now. If you want to switch to a big block chevy you can. The transmission mount is the same for small and big block chevy. Your options are the 366, 396, 402, 427, 454, 8.1L. The distributor will swap as well.