Gangster 4L60E/4L65E

Level 1 4L60E/4L65E – Rebuild – Rated to hold up to 300HP


  • New Force Motor
  • New Shift Solenoids
  • New 3/2 Downshift Solenoid
  • New TCC Solenoids
  • New Pressure Manifold
  • Special Sonnax Valve Specifically Made for the GM Code 1870 (Very Common on These Particular Units)

All Mad Dog Transmissions are completely rebuilt and come with a Master Overhaul Kit which includes:

  • All New Lip Seals
  • All New Gaskets
  • All New Teflon Rings
  • New Filter
  • All New Steels
  • All New Bushings
  • All New Raybestos Clutch Discs
  • All New Sprags

This Level 1 transmission comes with an Mad Dog Reprogramming update kit, Mad Dog shift kit, and Raybestos 9 clutches (replaces factory 5 clutches in the 3-4 drum) the 9 clutch pack also has specialized heat treated steels that can withstand much more abuse, all Raybestos high temp high energy clutches throughout the rest of the unit, all new steels, band, bushings, and rings. A 500 boost valve, 13 vane pump rotor. We also use 4140 hardened pump rings, TEFLON pump bushing, a 29 element sprag, 4 pinion planetary gear, Kevlar band and a Corvette servo ( the Corvette servo has 30% more holding power, to give you that full throttle shift without burning up the band).

This transmission can also be setup for pulling and towing (no extra charge).

We discard the oem factory, plastic accumulators and run Sonnax aluminum accumulators to ensure a quality shift every time.

For external full manual box add an additional $395.

If a Liftgate is needed at time of delivery a $25 fee will be billed to your credit card.  Core Charge is $175.

  • Free Converter and Shipping
  • Color choices available on checkout
  • Installation and extended warranties available on request
  • This is a factory rebuilt transmission with upgrades

NOTE: Let us know what type of shift you want. We can custom build each valve body for your application.

  • Stage 1: is a factory shift
  • Stage 2: has a nice crisp shift and at wide open throttle it will put you in your seat
  • Stage 3: is for that Saturday night special. Be warned stage 3 shift is very violent

Installations are available on all our transmissions. These transmissions are a direct replacement for your GM vehicle. No modifications or custom tuning necessary. The 700R4 is a true, 4-speed overdrive transmission and does not require a computer. Our units offer great performance and better gas mileage. If you are looking for an overdrive transmission for your old-school vehicle, we can do the complete installation or send you our conversion kit.