I agree with these other guys, get a book or video. I have a couple of good books, been a while since I looked at them, One is how to Hot Rod a Small Block Chevy, another is Chevy Performance and there is another I think How to Rebuild a Small Block chevy, all have very good information. The small block chevy is the easiest to rebuild, and has so many performance part available it unbievable. The other good point is just about all of the external parts off of these motors will fit on each other, as many of the internals too.

Good luck with your rebuild.