Product Description
The ATS 309-824-4248 Stage 2 Allison LCT1000 Transmission Package is a high-performance upgrade for 2001–2002 6.6L LB7 Duramax trucks equipped with 4WD. Designed to address common factory transmission weaknesses, this package delivers improved durability, smoother shifting, and increased torque capacity for daily driving, towing, and mild performance builds.
ATS enhances the Allison platform with upgraded clutch packs, valve body modifications, and improved hydraulic control to ensure consistent performance under load. This transmission is ideal for trucks running upgraded tuning or light power adders while maintaining excellent drivability and reliability.
The included ATS Five Star torque converter improves power transfer efficiency and reduces slippage, making this package a significant upgrade over stock without sacrificing street manners.
FAQ
Q: What is the difference between Stage 2 and higher stages?
A: Stage 2 is designed for stock to mildly modified trucks, offering improved strength and reliability without the extreme billet components found in higher stages.
Q: Is this transmission good for towing?
A: Yes, this package is excellent for towing applications, providing improved clutch holding capacity and better temperature control.
Q: Does this include a torque converter?
A: Yes, it includes the ATS Five Star torque converter for improved efficiency and performance.
Q: What horsepower level is this rated for?
A: Stage 2 is typically suited for trucks up to approximately 450–500 horsepower depending on usage.
Fitment
- 2001 Chevrolet Silverado 2500HD/3500HD 6.6L LB7 Duramax (4WD)
- 2001 GMC Sierra 2500HD/3500HD 6.6L LB7 Duramax (4WD)
- 2002 Chevrolet Silverado 2500HD/3500HD 6.6L LB7 Duramax (4WD)
- 2002 GMC Sierra 2500HD/3500HD 6.6L LB7 Duramax (4WD)
Key Features
- Designed for stock to mildly modified trucks
- Improved clutch packs and internal components
- Enhanced valve body calibration
- ATS Five Star torque converter included
- Increased torque holding capacity over stock
- Smoother and more consistent shifting
- Ideal for towing and daily driving
- Built for long-term reliability
Specifications for ATS 309-824-4248
| Specification | Details |
|---|---|
| Part Number | 309-824-4248 |
| UPC | Not Available |
| GTIN | Not Available |
| Transmission Type | Allison LCT1000 Stage 2 |
| Drivetrain | 4WD |
| Engine Compatibility | 6.6L Duramax LB7 |
| Model Years | 2001 - 2002 |
| Horsepower Rating | Up to 500 HP |
| Torque Capacity | Improved 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 |
