Here's a cult classic... this book was originally published by Chevrolet in April 1957 and sent out to 411 of its dealers. Essentially, it's an assembly manual for the '57 Chevy Black Widow NASCAR racer -- a 150 Business Coupe with 283 CID fuel-injected engine and some special modifications, which are described in detail.
Fascinating stuff, including how roll bars were installed back in those days, etc. Anyway, the entire 24-page manual is digitally reprinted here for reading and downloading.
The 1957 Chevrolet Stock Car Competition Guide | Mac's Motor City Garage.com