Product Description
The ATS 309-825-4248 Stage 2 Allison LCT1000 Transmission Package is a performance-driven upgrade for 2001–2002 6.6L LB7 Duramax trucks equipped with 4WD and PTO. Designed to improve reliability, towing capability, and overall transmission performance, this package addresses common factory weaknesses while maintaining excellent daily drivability.
This Stage 2 transmission is ideal for trucks with mild to moderate power upgrades, offering increased clutch capacity, improved shift quality, and enhanced durability under load. The included ATS Five Star torque converter and deep transmission pan help maximize efficiency, cooling, and torque transfer.
Whether you're towing heavy loads, daily driving, or running light performance upgrades, this ATS transmission delivers dependable performance and long-term reliability over stock components.
FAQ
Q: What is the difference between Stage 2 and higher ATS stages?
A: Stage 2 is designed for stock to moderately modified trucks, focusing on improved durability and towing performance, while higher stages are built for extreme horsepower applications.
Q: Does this transmission support towing?
A: Yes, it is specifically designed to improve towing performance with stronger internals and better heat management.
Q: What does PTO compatibility mean?
A: This transmission is designed to work with Power Take-Off (PTO) systems commonly used in work trucks and commercial applications.
Q: Is a torque converter included?
A: Yes, this package includes the ATS Five Star torque converter for improved torque multiplication and efficiency.
Fitment
- 2001 Chevrolet Silverado 2500HD/3500HD 6.6L LB7 Duramax (4WD w/ PTO)
- 2001 GMC Sierra 2500HD/3500HD 6.6L LB7 Duramax (4WD w/ PTO)
- 2002 Chevrolet Silverado 2500HD/3500HD 6.6L LB7 Duramax (4WD w/ PTO)
- 2002 GMC Sierra 2500HD/3500HD 6.6L LB7 Duramax (4WD w/ PTO)
Key Features
- Designed for stock to moderately modified trucks
- Increased clutch capacity over stock
- Improved shift firmness and consistency
- ATS Five Star torque converter included
- Deep transmission pan for improved cooling
- PTO compatible for work truck applications
- Enhanced durability for towing and daily driving
Specifications for ATS 309-825-4248
| Specification | Details |
|---|---|
| Part Number | 309-825-4248 |
| UPC | Not Available |
| GTIN | Not Available |
| Transmission Type | Allison LCT1000 Stage 2 |
| Drivetrain | 4WD |
| PTO Compatibility | Yes |
| 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 |
