Our heavy duty truck and off/road 4L60E is modified with increased clutch capacity, upgraded electronics, modified pump and valve body, bonded steel apply pistons, alloy accumulator pistons, high output boost valve and pressure regulator assembly, high rpm pump rings and Torrington vanes, Borg Warner 29 element dual cage input sprag, Borg warner low sprag, and a host of other modifications to produce a reliable trans capable of handling up to 400 horsepower. Perfect for towing, four wheeling or spirited street driving this is an excellent upgrade for your tired original transmission. Comes with our Heavy Duty torque Converter with carbon clutch, furnace brazing and hardened hub.
