Gearstar GM 4L80E two wheel drive 4 speed overdrive automatic transmission set up for LT style engines.Horse Power: 600
(Up to 600 ft-lbs Torque)
Converter: 10” Custom Built Lock-Up Billet Racing
Stall: 2600-3600 Master Overhaul Kit with Alto Hardened Steels
Raybestos Stage I Frictions
Transgo Reprogramming Kit
New Torrington Bearing Kit
New Bushing Kit
New Thrust Washer Kit
New Internal Wiring Harness
New Manifold Pressure Switch
New EPC Solenoid
New PWM Solenoid
New Input & Output Speed Sensors
New 1-2 Shift Solenoid
New 3-4 Shift Solenoid
Expanded Capacity Forward Clutch Drum
Extra Capacity Second Gear Clutch Assembly
Expanded Capacity Third Clutch Drum
Heat Treated Input Shaft
Heat Treated Main Shaft
Heat Treated Forward Steel Clutch Hub
Updated Molded Steel Direct Clutch Piston
Updated Reverse Band
New Low Roller Assembly
Wide Kickdown Band w/New Apply Piston
Heavy Duty Intermediate Sprag
Updated Boost Valve
Updated TCC Regulator Valve
Blue Printed Pump & Valve Body
New OEM Steel Pan
The Evolution of GM 4L80E Transmissions
GM 4L80E transmissions were first introduced in 1991. They were placed in GM trucks, such as the Sierra, Silverado, Suburban, and the Hummer H1. There were some minor issues with the automatic transmissions, but improvements have been made over the years.
For one, the newer boxes are more attractive and all models can be made to fit performance applications. This is one of the reasons why 4L80E transmissions find their way into luxury vehicles such as Bentleys, Jaguars, Rolls Royces, and Aston Martins.
Of course, we can’t forget that GM 4L80E transmissions can also be found in less appealing vehicles such as motorhomes and school buses!
4L80E vs. TH400
As stated before, the 4L80E is similar to the TH400. It has a 25 percent overdrive and is 4 inches longer than the TH400, but the trans mount is moved rearward by an inch-and-a-half. Also, the 4L80E is roughly 50 pounds heavier compared to the TH400 because of the electronic control.
Speaking of, the need for electronic control is a concern surrounding this transmission. The 4L80E transmission requires a controller, but some drivers appreciate that they can easily reprogram and adjust the display to their liking. Shift points, shift pressures, torque converter lockup, and overdrive can all be controlled by the user, offering endless possibilities and full control.
Today, GM 4L80E transmissions keep its die-cast aluminum frame and is mostly compatible with Chevrolet style GM engines. The high performance automatic transmission is widely recognized for its reliability and power.
We can also build you a custom kit with crossmember and more for your application. Give us a call at 931-646-4836