The main automatic transmission to implement a torque converter (in place of a fluid coupling) was the Buick Dynaflow, which was introduced for your 1948 model year. In usual driving, the Dynaflow used just the best gear, relying on the torque multiplication of your torque convertor at lower speeds. The https://gearbox-auto19527.answerblogs.com/34362924/gearbox-auto-for-dummies