The first automatic transmission to work with a torque converter (rather than a fluid coupling) was the Buick Dynaflow, which was launched for that 1948 model yr. In standard driving, the Dynaflow used just the leading gear, counting on the torque multiplication on the torque convertor at decrease speeds. The https://gearboxauto75307.weblogco.com/33772868/rumored-buzz-on-gearbox-auto