This transmission has 4 ahead gears and one particular reverse gear. Let's summarize the gear ratios, inputs and outputs: The overall Motors Hydra-Matic turned the 1st mass-developed automatic transmission pursuing its introduction in 1939 (1940 design year). Readily available as an alternative in cars including the Oldsmobile Series 60 and https://gearbox-auto63951.tkzblog.com/33935208/top-latest-five-gearbox-auto-urban-news