The 1st automatic transmission to work with a torque converter (as an alternative to a fluid coupling) was the Buick Dynaflow, which was released with the 1948 model year. In usual driving, the Dynaflow employed just the prime equipment, counting on the torque multiplication in the torque convertor at reduce https://gearbox-auto57891.answerblogs.com/34004969/top-gearbox-auto-secrets