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May 16, 2014 · Combining a Fluid-Drive-style fluid coupling (not yet a torque converter) to the AST almost seemed a no-brainer after working out the bugs with the latter, and indeed, Thompson’s team followed the project through until they had their fully automatic transmission, the Hydra-Matic, which GM’s Detroit Transmission Division began to produce in May 1939 and then to ship to Oldsmobile that ...
- Daniel Strohl
The Hydra-Matic 6L90 (production code MYD) is a six-speed automatic transmission produced by General Motors for use in rear- and rear-biased all-wheel-drive vehicles with a longitudinal powertrain ...
Mar 7, 2023 · When Hydra-Matic was new. I believe that Oldsmobile first offered the Hydramatic as an option in 1940. The first Oldsmobile I saw with Hydramatic was a 1941 model. The Cadillac offered the Hydramatic before WW Ii. Hydramatic was an option beginning in 1948 on Pontiacs. That year, 85% of the 8 cylinder Pontiacs sold were equipped with Hydramatic ...
Hydramatic. A Hydra-Matic Drive transmission, produced between 1939 and 1956, on display at the Ypsilanti Automotive Heritage Museum. Hydramatic (also known as Hydra-Matic) is an automatic transmission developed by both General Motors ' Cadillac and Oldsmobile divisions. Introduced in 1939 for the 1940 model year vehicles, the Hydramatic was ...
Jan 18, 2022 · It was decided to roll out the gearbox unit to the public first, so in June of 1937 came the introduction of the Oldsmobile Automatic Safety Transmission, or AST. As shown in the cutaway schematic above, the AST was essentially the gearbox portion of a Hydra-Matic, with four forward speeds via planetary gearsets and hydraulic servos operating a set of bands and clutches to perform the ...
Jun 23, 2021 · Versions of the Hydra-Matic saw action in U.S. fighting vehicles in World War II, including the M5 Stuart and M24 Chafee tanks. Pontiac (photo above) adopted the Hydra-Matic in 1948, but the Buick and Chevrolet divisions opted to develop their own automatics. (See our features on the Buick Dynaflow here and the Chevrolet Powerglide here.)
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Jan 30, 2019 · Here’s Oldsmobile’s pitch for the 1942 Hydra-Matic. General Motors got a sizable jump on the industry in 1940 with the introduction of Hydra-Matic Drive, the first practical fully automatic transmission. Developed by GM engineering wizard Earl Thompson and crew, the feature was adopted by Oldsmobile in 1940, Cadillac in 1941, and Pontiac in ...
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