The first automatic transmission to employ a torque converter (in lieu of a fluid coupling) was the Buick Dynaflow, which was launched for your 1948 product 12 months. In ordinary driving, the Dynaflow applied only the top equipment, relying on the torque multiplication of the torque convertor at decrease speeds. https://augustxdeec.blogocial.com/the-best-side-of-gearbox-auto-69891258