66501 - PERFECT TORC 4L60-5E/4L80-5E Transmission Controller
State-of-the-Art stand-alone transmission controller for the General Motors 4-speed 4L60/65E and 4L80/85E automatics. Fully compatible with carburated, fuel injected and diesel engines. Laptop software included with several "base" calibrations to start off with for each application.
If you are using a GM 4L60E, it will fit 1996 and newer GM 4L60E transmissions only. (On later model 4L65E models it is not necessary to plug into the input shaft speed sensor.)
If you are using a GM 4L80E, it will fit 1995 and newer GM 4L80E transmissions only. (If earlier unit is desired to be used; the "Bosch" style pressure control solenoid MUST be replaced with the newer "Holley" style pressure control solenoid.
Be sure to click on the "Manual" link and download a copy of the TORC instructions to read about why it is the simplest electronic transmission controller on the market.