The initial automatic transmission to work with a torque converter (as opposed to a fluid coupling) was the Buick Dynaflow, which was released for your 1948 product yr. In regular driving, the Dynaflow utilized only the best gear, relying on the torque multiplication on the torque convertor at decreased speeds. https://gearboxauto87317.ambien-blog.com/40603188/gearbox-auto-can-be-fun-for-anyone