Gearstar GM 4L65E Automatic Transmission Level 2 400hp

SKU: ATGM-10010 Category:

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If you don't know what you need, call our technical sales staff at 931-646-4836


Gearstar GM 4L65E two piece case two wheel drive 4 speed overdrive automatic transmission set up for  LS style engines.

Level 2 400hp/400lbft 1600-2400 stall.

Pricing Includes YANK billet torque converter, fluid and shipping. Controller required. Transmission cooler required.

Comes with a 3 year warranty! 

Built to order

Please allow 2-3 weeks for shipping

Includes the following upgrades:

Raybestos Stage 1 Frictions and Steels
High Energy Wide Bands
2 Transgo Recalibration Shift Kits with Shift Command
Original Equipment Style Filter
New Internal Wiring Harness with TCC Solenoid
New Shift Solenoids
New EPC Solenoid
New PWM Solenoid
New 3/2 Control Solenoid
New Manifold Pressure Switch
New Electronic Speed Sensor
Corvette Servo
New Valve Body Separator Plate
4th Gear Super Hold Servo
New Torrington Bearings
Complete Bushing Kit
Thrust Washer Kit
New 29-Element Dual Cage Sprag
High Capacity 10-Vane Pump Assembly with New Rotor and Slide
Hardened Stator Shaft
New Vanes and Hardened Rings
0.500 Boost Valve
Updated Pressure Regulator Valve
Extra Capacity 3-4 Clutch Drum Assembly with High-Rev Spring Kit
Reinforced Input Drum
Heavy Duty Hardened Rollerized Sun Shell
Five-Pinion Heavy Duty Steel Planetary Gear Sets
New Polished Aluminum Transmission Pan
Universal Transmission Mount
New Original Equipment Steel Transmission Pan

4L65E, among others, was designed to replace the TH350. It’s a solid automatic transmission that is similar to the 4L60E, only with far more strength and power. GM 4L65E transmissions were designed to handle more torque, but has an identical looking case to its predecessor. However, the 4L65E is not compatible with the 4L60E because it uses a different torque converter and input shaft. If you plan on upgrading to the 4L65E transmission, you will need a converter which is included for each trans we sell. 

How the 4L65E Transmission Has Evolved

The 4L65E was born because structural improvements needed to be made off older transmissions, such as the 4L60E. The 4L65E transmission is stronger, has better performance, a hardened sun shell and input shaft, and a five-pinion rear planetary. Hot rodders appreciate having more pinion gears because the load is spread out, and the transmission can handle more torque. Additionally, the 4L65E features a deeper pan for more fluid and a 3-4 clutch.

Custom-Built GM 4L65E Transmissions

The areas where four-speed automatics shine is their strength, abundance, and opportunities for upgrade. Whether you’re interested in upgrading your current 4L60E transmission or are starting from scratch, Gearstar is happy to help! We custom build high performance automatic GM 4L65E transmissions using American made parts. When you place your order, only one highly qualified technician will work on your transmission, ensuring that everything is given the appropriate attention.

We can also build you a custom kit with crossmember and more for your application. Give us a call at 931-646-4836 

Weight: lbs

Dimensions: W" x H" x L"

If you don't know what you need, call our technical sales staff at 931-646-4836