Product Description
The ATS 309-825-4308 Stage 2 Allison LCT1000 Transmission Package is a performance-focused upgrade for 2006–2007 6.6L Duramax LLY, LBZ, and LMM trucks equipped with 4WD and PTO functionality. Designed to eliminate common factory transmission weaknesses, this package delivers improved durability, enhanced shift quality, and increased torque capacity for towing and daily driving applications.
Built for reliability and moderate performance gains, the Stage 2 package includes upgraded clutch packs, improved valve body calibration, and enhanced internal components to provide smoother shifts and longer transmission life. The included ATS Five Star torque converter maximizes power transfer while maintaining excellent drivability.
This transmission is ideal for trucks with mild tuning, towing setups, or work applications requiring dependable performance without stepping into extreme horsepower builds.
FAQ
Q: What is the benefit of a Stage 2 transmission upgrade?
A: Stage 2 improves clutch holding capacity, shift quality, and durability over stock, making it ideal for towing and lightly modified trucks.
Q: Does this transmission support PTO functionality?
A: Yes, this unit is specifically built for applications requiring Power Take-Off (PTO).
Q: Is a torque converter included?
A: Yes, it includes the ATS Five Star torque converter for improved efficiency and performance.
Q: What power level is this transmission suited for?
A: This transmission is best suited for stock to moderately upgraded trucks, typically up to 500–600 horsepower.
Fitment
- 2006 Chevrolet Silverado 2500HD/3500HD 6.6L LLY / LBZ Duramax (4WD)
- 2006 GMC Sierra 2500HD/3500HD 6.6L LLY / LBZ Duramax (4WD)
- 2007 Chevrolet Silverado 2500HD/3500HD 6.6L LBZ / LMM Duramax (4WD)
- 2007 GMC Sierra 2500HD/3500HD 6.6L LBZ / LMM Duramax (4WD)
- Equipped with PTO (Power Take-Off)
Key Features
- Stage 2 performance build for towing and daily driving
- Increased clutch capacity over stock
- Improved valve body calibration
- ATS Five Star torque converter included
- Enhanced durability and shift quality
- Designed for 4WD with PTO applications
- Ideal for stock to moderately tuned trucks
Specifications for ATS 309-825-4308
| Specification | Details |
|---|---|
| Part Number | 309-825-4308 |
| UPC | Not Available |
| GTIN | Not Available |
| Transmission Type | Allison LCT1000 Stage 2 |
| Drivetrain | 4WD |
| PTO Compatibility | Yes |
| Engine Compatibility | 6.6L Duramax LLY / LBZ / LMM |
| Model Years | 2006 - 2007 |
| Horsepower Rating | Up to 600 HP (Recommended) |
| 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 |
