The main automatic transmission to implement a torque converter (as an alternative to a fluid coupling) was the Buick Dynaflow, which was launched with the 1948 design calendar year. In regular driving, the Dynaflow applied just the top rated gear, relying on the torque multiplication on the torque convertor at https://gearboxauto43073.luwebs.com/34835350/details-fiction-and-gearbox-auto