Product Description
The ATS 309-822-4308 Stage 2 Allison LCT1000 Transmission Package is the perfect upgrade for 2006–2007 6.6L Duramax LLY, LBZ, and LMM trucks looking for improved reliability, towing performance, and moderate horsepower capability. Designed to address factory transmission weaknesses, this 2WD package delivers increased clutch capacity, better shift control, and enhanced durability for daily driving and heavy towing applications.
This Stage 2 transmission is ideal for trucks with mild performance upgrades, offering stronger internals and improved torque handling without sacrificing drivability. Paired with the ATS Five Star torque converter, it ensures efficient power transfer and smoother engagement under load.
Whether you're towing heavy loads or running a lightly modified Duramax, this package provides the strength and reliability needed to outperform the stock Allison transmission.
FAQ
Q: What power level is the ATS Stage 2 transmission designed for?
A: Stage 2 is ideal for stock to moderately modified trucks, typically supporting up to approximately 500-600 horsepower.
Q: Is this transmission good for towing?
A: Yes, it is specifically designed to improve towing performance with better clutch holding capacity and reduced slip.
Q: Does this include a torque converter?
A: Yes, it includes the ATS Five Star torque converter for improved efficiency and durability.
Q: Is this a direct replacement?
A: Yes, this is a direct-fit replacement for compatible 2WD Duramax trucks.
Fitment
- 2006 Chevrolet Silverado 2500HD/3500HD 6.6L LLY Duramax (2WD)
- 2006 Chevrolet Silverado 2500HD/3500HD 6.6L LBZ Duramax (2WD)
- 2007 Chevrolet Silverado 2500HD/3500HD 6.6L LBZ Duramax (2WD)
- 2007 Chevrolet Silverado 2500HD/3500HD 6.6L LMM Duramax (2WD Classic)
- 2006 GMC Sierra 2500HD/3500HD 6.6L LLY Duramax (2WD)
- 2006 GMC Sierra 2500HD/3500HD 6.6L LBZ Duramax (2WD)
- 2007 GMC Sierra 2500HD/3500HD 6.6L LBZ Duramax (2WD)
- 2007 GMC Sierra 2500HD/3500HD 6.6L LMM Duramax (2WD Classic)
Key Features
- Designed for stock to moderately modified Duramax trucks
- Improved clutch capacity over stock
- Enhanced shift firmness and durability
- ATS Five Star torque converter included
- Upgraded internal components for longer lifespan
- Ideal for towing and daily driving
- Direct-fit replacement for factory Allison transmission
Specifications for ATS 309-822-4308
| Specification | Details |
|---|---|
| Part Number | 309-822-4308 |
| UPC | Not Available |
| GTIN | Not Available |
| Transmission Type | Allison LCT1000 Stage 2 |
| Drivetrain | 2WD |
| Engine Compatibility | 6.6L Duramax LLY / LBZ / LMM |
| Model Years | 2006 - 2007 |
| Horsepower Rating | Up to 600 HP (Estimated) |
| 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 |
