The first automatic transmission to work with a torque converter (instead of a fluid coupling) was the Buick Dynaflow, which was introduced for that 1948 product calendar year. In normal driving, the Dynaflow used just the major equipment, counting on the torque multiplication of your torque convertor at lessen speeds. https://gearboxauto31740.blogerus.com/56297769/rumored-buzz-on-gearbox-auto