The very first automatic transmission to work with a torque converter (rather than a fluid coupling) was the Buick Dynaflow, which was launched for that 1948 design yr. In regular driving, the Dynaflow utilised only the major equipment, counting on the torque multiplication of the torque convertor at decrease speeds. https://claytonthsbk.oblogation.com/32992662/getting-my-gearbox-auto-to-work