The main automatic transmission to utilize a torque converter (as opposed to a fluid coupling) was the Buick Dynaflow, which was launched for your 1948 model 12 months. In usual driving, the Dynaflow applied only the best gear, relying on the torque multiplication of your torque convertor at decreased speeds. https://troyvzazx.onesmablog.com/how-gearbox-auto-can-save-you-time-stress-and-money-74399966