The 1st automatic transmission to make use of a torque converter (instead of a fluid coupling) was the Buick Dynaflow, which was introduced for your 1948 design yr. In typical driving, the Dynaflow utilised only the prime gear, relying on the torque multiplication with the torque convertor at reduce speeds. https://gearboxauto42962.blogdemls.com/34035982/top-latest-five-gearbox-auto-urban-news