I got a book from Borders called, "How to rebuild Chevy Big Blocks." There was a whole section on that kind of stuff, I think in the "hobbies" section or the "automotive" section or something like that.
I am just starting out with this kind of work so I got it about a year ago and read it cover to cover. It was pretty good, plus it had all kinds of casting number charts for heads and blocks and cranks so if you get your engine from a junkyard or something you can figure out exactly what you've got.
You should check out their selection, something will probably fit what you want.