Product Description
The ATS 309-835-4248 Stage 3 Allison LCT1000 Transmission Package is a high-performance upgrade designed for 2001–2002 6.6L LB7 Duramax trucks equipped with 4WD and PTO capability. Built to eliminate factory transmission weaknesses, this package delivers increased strength, improved shift quality, and enhanced reliability for both work and performance applications.
Ideal for towing, daily driving, and moderate horsepower builds, the Stage 3 package provides a significant increase in torque capacity while maintaining smooth drivability. With upgraded clutch packs, valve body modifications, and ATS’s proven engineering, this transmission is built to handle demanding conditions without sacrificing longevity.
Whether you're hauling heavy loads or adding power to your Duramax, this transmission package ensures dependable performance and durability well beyond stock capabilities.
FAQ
Q: What is the difference between Stage 3 and higher-stage ATS transmissions?
A: Stage 3 is designed for moderate performance and towing, while higher stages (Stage 4 and 5) include more billet components and are built for extreme horsepower applications.
Q: Is this transmission suitable for towing?
A: Yes, the Stage 3 package is ideal for heavy towing and work trucks, offering improved clutch capacity and durability over stock.
Q: Does this unit support PTO functionality?
A: Yes, this transmission is specifically built with PTO (Power Take-Off) compatibility for work truck applications.
Q: Does this include a torque converter?
A: Yes, it includes a performance ATS torque converter designed to improve efficiency and power transfer.
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
- Increased clutch capacity over stock
- Enhanced valve body for improved shift quality
- Includes ATS performance torque converter
- PTO (Power Take-Off) compatible
- Improved durability and reliability
- Ideal for work trucks and daily driving
Specifications for ATS 309-835-4248
| Specification | Details |
|---|---|
| Part Number | 309-835-4248 |
| UPC | Not Available |
| GTIN | Not Available |
| Transmission Type | Allison LCT1000 Stage 3 |
| Drivetrain | 4WD |
| Engine Compatibility | 6.6L Duramax LB7 |
| Model Years | 2001 - 2002 |
| PTO Compatibility | Yes |
| 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 |
