Denny - Chevrolet has been producing Master Parts books since 1912. What you would need is one printed about 3 to 5 years after your vehicle.
Both the Rochester book and the Chevrolet books are readily available from the large literature dealers - not inexpensive.
As far as scanning the books, both were copyrighted, thus scanning and reproducing (within 75 years of the print date) violates federal law (unless one is willing to pay the GM licensing fee). There are probably some versions of the Chevrolet parts book which have been licensed, and reproduced for sale.
Jon.
