The main automatic transmission to use a torque converter (rather than a fluid coupling) was the Buick Dynaflow, which was launched for your 1948 model year. In standard driving, the Dynaflow utilized only the major gear, depending on the torque multiplication from the torque convertor at reduced speeds. The Dynaflow https://gearbox-auto97394.getblogs.net/66721502/gearbox-auto-options