Turbo 400 torque converter are often characterized by the number of forward gears they produce as well as their maximum rated speed. For instance, a 3-speed converter is designed to produce three forward gears, while a single-speed converter produces only a single gear. The majority of new vehicles today are equipped with conventional automatic transmissions, which do use a torque converter to transfer power from the engine to the transmission. However, due to the greater efficiency of the turbo 400 system, many drivers prefer a converter-equipped transmission in their older cars, trucks You can buy from link below – https://www.totalperformance.net.au/turbo-th350-th400-torque-converters-for-sale