Product Description
The ATS 309-834-4248 Stage 3 Allison LCT1000 Transmission Package is a high-performance upgrade designed specifically for 2001–2002 6.6L LB7 Duramax trucks equipped with 4WD. Built to significantly improve durability and performance over the factory transmission, this package is ideal for daily drivers, towing applications, and moderate performance builds.
This Stage 3 transmission addresses common Allison weaknesses with upgraded clutch packs, improved valve body calibration, and reinforced internal components. The result is firmer, more reliable shifting and increased torque capacity while maintaining smooth drivability for street and towing use.
Paired with the ATS Five Star torque converter, this package delivers improved power transfer, reduced slippage, and enhanced efficiency under load. It’s the perfect solution for truck owners looking to handle increased horsepower without stepping up to a full race transmission.
FAQ
Q: What power levels can the Stage 3 transmission handle?
A: The Stage 3 is designed for moderate performance builds and towing applications, typically supporting up to approximately 500–600 horsepower depending on setup.
Q: Is this a good option for towing?
A: Yes, this transmission is an excellent upgrade for towing, offering improved clutch holding capacity and better heat management.
Q: Does this transmission include a torque converter?
A: Yes, it includes the ATS Five Star torque converter for improved torque multiplication and efficiency.
Q: What makes this better than a stock rebuild?
A: Unlike a stock rebuild, the Stage 3 includes upgraded internal components and performance tuning that significantly increase durability and performance.
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 towing and moderate performance builds
- Improved clutch packs for increased holding capacity
- Enhanced valve body calibration for firmer shifts
- ATS Five Star torque converter included
- Increased durability over stock transmission
- Improved heat management and efficiency
- Ideal balance of performance and drivability
Specifications for ATS 309-834-4248
| Specification | Details |
|---|---|
| Part Number | 309-834-4248 |
| UPC | Not Available |
| GTIN | Not Available |
| Transmission Type | Allison LCT1000 Stage 3 |
| Drivetrain | 4WD |
| Engine Compatibility | 6.6L Duramax LB7 |
| Model Years | 2001 - 2002 |
| Horsepower Rating | Up to 600 HP |
| Torque Capacity | Increased over stock |
| Shipping Weight | Approximately 350-400 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 |
