The main automatic transmission to implement a torque converter (instead of a fluid coupling) was the Buick Dynaflow, which was launched for the 1948 design yr. In regular driving, the Dynaflow utilized only the leading gear, relying on the torque multiplication of the torque convertor at reduce speeds. The Dynaflow https://lorenzofpsss.thenerdsblog.com/39936792/facts-about-gearbox-auto-revealed