This 23 page detailed Saginaw Transmission Service Manual is divided into two sections and covers both Three & Four Speed Transmissions, it has many illustrations including the shifters and simple to follow directions that will help walk you through the entire process of rebuilding your transmission from A to Z!

These are the same Saginaw Transmissions that were used on all the GM cars of the 60's and 70's era, including Firebird and Camaro.

(Sample page shown below)