This transmission has 4 ahead gears and a single reverse gear. Let us summarize the equipment ratios, inputs and outputs: The General Motors Hydra-Matic turned the first mass-produced automatic transmission following its introduction in 1939 (1940 product year). Accessible as an option in vehicles like the Oldsmobile Sequence sixty and https://messiahckllj.blogofchange.com/34741785/the-gearbox-auto-diaries