Product Description
The ATS 309-844-4308 Stage 4 Allison LCT1000 Transmission Package is a high-performance upgrade designed for 2006–2007 6.6L Duramax LLY, LBZ, and LMM trucks equipped with 4WD. Built to handle significantly increased horsepower and torque, this transmission package eliminates factory limitations and delivers dependable performance for towing, street, and aggressive driving applications.
Featuring upgraded internal components, enhanced clutch capacity, and precision tuning, the Stage 4 package provides improved shift quality, increased durability, and superior power handling. The included ATS Five Star torque converter ensures efficient power transfer while maintaining drivability under load.
This transmission is engineered for high-performance daily drivers and work trucks, offering substantial gains in strength and reliability over stock while supporting elevated horsepower levels.
FAQ
Q: What is the difference between Stage 4 and Stage 5?
A: Stage 4 is designed for high-performance street and towing applications, while Stage 5 includes additional billet components for extreme horsepower and competition use.
Q: Is this transmission suitable for towing heavy loads?
A: Yes, it is built for towing and heavy-duty use with improved clutch capacity and thermal management.
Q: Does this package include a torque converter?
A: Yes, it includes the ATS Five Star torque converter for optimal efficiency and torque multiplication.
Q: What horsepower can this transmission support?
A: This Stage 4 transmission is typically rated for up to approximately 750–800 horsepower depending on setup.
Fitment
- 2006 Chevrolet Silverado 2500HD/3500HD 6.6L LLY Duramax (4WD)
- 2006 Chevrolet Silverado 2500HD/3500HD 6.6L LBZ Duramax (4WD)
- 2006 GMC Sierra 2500HD/3500HD 6.6L LLY Duramax (4WD)
- 2006 GMC Sierra 2500HD/3500HD 6.6L LBZ Duramax (4WD)
- 2007 Chevrolet Silverado 2500HD/3500HD 6.6L LBZ Duramax (4WD)
- 2007 Chevrolet Silverado 2500HD/3500HD 6.6L LMM Duramax (4WD)
- 2007 GMC Sierra 2500HD/3500HD 6.6L LBZ Duramax (4WD)
- 2007 GMC Sierra 2500HD/3500HD 6.6L LMM Duramax (4WD)
Key Features
- Supports up to 750–800HP
- Increased clutch capacity over stock
- Upgraded internal components for durability
- ATS Five Star torque converter included
- Improved shift quality and performance
- Designed for towing, street, and performance use
- 4WD configuration
Specifications for ATS 309-844-4308
| Specification | Details |
|---|---|
| Part Number | 309-844-4308 |
| UPC | Not Available |
| GTIN | Not Available |
| Transmission Type | Allison LCT1000 Stage 4 |
| Drivetrain | 4WD |
| Engine Compatibility | 6.6L Duramax LLY / LBZ / LMM |
| Model Years | 2006 - 2007 |
| Horsepower Rating | Up to 800 HP |
| Torque Capacity | Significantly 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 |
