The primary automatic transmission to implement a torque converter (as an alternative to a fluid coupling) was the Buick Dynaflow, which was released to the 1948 model yr. In regular driving, the Dynaflow employed only the leading equipment, counting on the torque multiplication with the torque convertor at decreased speeds. https://angelostsom.59bloggers.com/34231785/the-best-side-of-gearbox-auto