The primary automatic transmission to make use of a torque converter (as an alternative to a fluid coupling) was the Buick Dynaflow, which was released for your 1948 product calendar year. In standard driving, the Dynaflow used only the top gear, depending on the torque multiplication from the torque convertor https://gearboxauto85183.creacionblog.com/33958791/top-latest-five-gearbox-auto-urban-news