The primary automatic transmission to implement a torque converter (as an alternative to a fluid coupling) was the Buick Dynaflow, which was introduced for the 1948 model yr. In normal driving, the Dynaflow utilised only the prime gear, counting on the torque multiplication of your torque convertor at reduce speeds. https://gearboxauto52850.arwebo.com/56727328/how-gearbox-auto-can-save-you-time-stress-and-money