I'm sure others here will have good advice, but an easy answer is to get a copy of "How to Build Chevy Small Blocks on a Budget" by David Vizard. There are other such books at car parts store and the Chevy is very polular so there are a number of such how to books, but I have found Vizard's step by step books to be very helpful.

Don Shillady
Retired Scientist/teen rodder