The first automatic transmission to utilize a torque converter (as opposed to a fluid coupling) was the Buick Dynaflow, which was introduced for your 1948 design calendar year. In standard driving, the Dynaflow utilised only the best equipment, depending on the torque multiplication of the torque convertor at lower speeds. https://gearbox-auto21852.ssnblog.com/33216547/rumored-buzz-on-gearbox-auto