Product Description
The ATS 309-844-4362 Stage 4 Allison LCT1000 Transmission Package is a premium performance upgrade for 2011–2016 6.6L LML Duramax trucks equipped with 4WD. Designed to handle significantly more power than the factory transmission, this package is ideal for heavy towing, street performance, and mildly built trucks pushing increased horsepower and torque.
ATS Stage 4 transmissions are engineered with upgraded internal components, increased clutch capacity, and precision calibration to deliver smoother, firmer shifts and improved durability. The included ATS Five Star torque converter enhances torque multiplication and efficiency, while the deep transmission pan improves cooling for extended transmission life.
This transmission package provides a major reliability upgrade over stock while maintaining excellent drivability, making it perfect for daily drivers, tow rigs, and performance builds in the 500–750 horsepower range.
FAQ
Q: What is the difference between Stage 4 and Stage 5 transmissions?
A: Stage 4 is designed for high-performance towing and moderate horsepower builds, while Stage 5 includes additional billet components for extreme horsepower applications.
Q: Is this transmission good for towing?
A: Yes, this transmission is ideal for towing, offering improved clutch capacity, better cooling, and enhanced durability over stock.
Q: Does this include a torque converter?
A: Yes, it includes the ATS Five Star torque converter for improved performance and efficiency.
Q: What power levels can this transmission support?
A: This Stage 4 package is typically suited for builds up to approximately 750 horsepower.
Fitment
- 2011 Chevrolet Silverado 2500HD/3500HD 6.6L LML Duramax (4WD)
- 2012 Chevrolet Silverado 2500HD/3500HD 6.6L LML Duramax (4WD)
- 2013 Chevrolet Silverado 2500HD/3500HD 6.6L LML Duramax (4WD)
- 2014 Chevrolet Silverado 2500HD/3500HD 6.6L LML Duramax (4WD)
- 2015 Chevrolet Silverado 2500HD/3500HD 6.6L LML Duramax (4WD)
- 2016 Chevrolet Silverado 2500HD/3500HD 6.6L LML Duramax (4WD)
- 2011 GMC Sierra 2500HD/3500HD 6.6L LML Duramax (4WD)
- 2012 GMC Sierra 2500HD/3500HD 6.6L LML Duramax (4WD)
- 2013 GMC Sierra 2500HD/3500HD 6.6L LML Duramax (4WD)
- 2014 GMC Sierra 2500HD/3500HD 6.6L LML Duramax (4WD)
- 2015 GMC Sierra 2500HD/3500HD 6.6L LML Duramax (4WD)
- 2016 GMC Sierra 2500HD/3500HD 6.6L LML Duramax (4WD)
Key Features
- Designed for 500–750HP applications
- Increased clutch capacity for improved holding power
- Upgraded internal components for durability
- ATS Five Star torque converter included
- Deep transmission pan for improved cooling
- Enhanced shift performance and drivability
- Ideal for towing, daily driving, and performance builds
Specifications for ATS 309-844-4362
| Specification | Details |
|---|---|
| Part Number | 309-844-4362 |
| UPC | Not Available |
| GTIN | Not Available |
| Transmission Type | Allison LCT1000 Stage 4 |
| Drivetrain | 4WD |
| Engine Compatibility | 6.6L Duramax LML |
| Model Years | 2011 - 2016 |
| Horsepower Rating | Up to 750 HP |
| Torque Capacity | Increased over stock |
| Shipping Weight | Approximately 400 lbs |
| Shipping Method | Freight (Core Charge Applies) |
| Warranty | 5 Year / 500,000 Mile Limited Warranty |
| California Prop 65 | WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov |
