Send Us Your T42 TCM
Place your T42 TCM in a box, and ship it to us (using any shipping method). You may choose from two programming options, from the dropdown menu.
Speed Only - adjust the gear ratio, tire size, and transmission shift points, to be compatible with your project vehicle.
Performance - this option includes all of the features of the Speed Only option listed above. We will also adjust the shift time, shift pressure, torque management, torque converter lock-up rate, and torque converter lock-up pressure.