The very first automatic transmission to work with a torque converter (in lieu of a fluid coupling) was the Buick Dynaflow, which was released with the 1948 model yr. In normal driving, the Dynaflow applied only the top gear, depending on the torque multiplication of the torque convertor at reduce https://gearbox-auto29628.designi1.com/55263607/the-ultimate-guide-to-gearbox-auto