The initial automatic transmission to implement a torque converter (instead of a fluid coupling) was the Buick Dynaflow, which was introduced for the 1948 product calendar year. In regular driving, the Dynaflow utilized only the top rated gear, relying on the torque multiplication from the torque convertor at lessen speeds. https://gearboxauto08529.bloggerbags.com/39084957/a-secret-weapon-for-gearbox-auto