The main automatic transmission to utilize a torque converter (in place of a fluid coupling) was the Buick Dynaflow, which was released with the 1948 product 12 months. In regular driving, the Dynaflow utilized only the major gear, depending on the torque multiplication in the torque convertor at lessen speeds. https://zionyxwtq.blogcudinti.com/33899790/gearbox-auto-things-to-know-before-you-buy