1940–1956 GM Hydra-Matic Transmission Parts Catalog (1956 Edition)

The 1956 edition of the GM Hydra-Matic Transmission Parts Catalog (Bulletin 37A-100, first issue dated August 1, 1956) from General Motors Parts Sales, United Motors System. It lists Hydra-Matic parts for Cadillac, Oldsmobile and Pontiac cars and Chevrolet and GMC trucks, from 1940 Oldsmobile units to the 1956 Jetaway and Controlled Coupling transmissions. In this scan the Lincoln, Nash-Hudson and Kaiser part number conversion list comes first, followed by the introduction, model identification guide and kit section. Each division then has its own listings by group number; Cadillac and GMC truck have their own illustrations, while one shared illustration set serves Chevrolet, Oldsmobile and Pontiac.