PERFECT TORC GM 4L60/65E & 4L80/85E Transmission Controller P/N 66501
Part Number: 66501
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. The software download includes 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.
If your Controller is 2021 or earlier download 2021. If it's 2022 or newer, download 2022.
image 1: 2021 or Earlier
image 2: 2022 +
Prop 65 Warning
Basic required connections to run these transmissions with TORC:
1) (1) Ignition Switched Power and (2) Grounds
2) (1) Throttle Position Signal (5Vref and Reference Ground provided for Carb and Diesel applications where a universal TPS is used.)
3) Plug in the main 20 pin transmission case connector and the 2 pin Vehicle Speed Sensor connector.