The first automatic transmission to use a torque converter (in lieu of a fluid coupling) was the Buick Dynaflow, which was launched with the 1948 design calendar year. In standard driving, the Dynaflow utilized just the leading equipment, depending on the torque multiplication in the torque convertor at decreased speeds. https://gearboxauto17384.like-blogs.com/33925914/the-best-side-of-gearbox-auto