Product Description
The ATS 309-855-4248 Stage 5 Allison LCT1000 Transmission Package is a top-tier performance transmission upgrade designed for 2001-2002 GM Silverado and Sierra HD trucks equipped with the 6.6L LB7 Duramax diesel engine, 4WD drivetrain, and PTO. Built for extreme performance, towing, and high-horsepower applications, this Stage 5 package delivers maximum strength, durability, and reliability.
This complete package includes a fully built ATS Allison LCT1000 transmission, ATS Five Star torque converter, and ATS deep transmission pan. The Stage 5 build incorporates billet internal components, upgraded clutch packs, and reinforced hard parts to handle significantly increased torque loads while maintaining smooth and controlled shifting.
The included ATS Five Star torque converter improves torque multiplication and lock-up efficiency, while the deep transmission pan increases fluid capacity and cooling performance—critical for maintaining consistent performance under heavy load or high-performance conditions.
This package is ideal for performance builds, competition trucks, and heavy towing applications where maximum transmission strength and reliability are required.
FAQ
What is included in the ATS 309-855-4248 package?
This package includes a fully built ATS Stage 5 Allison LCT1000 transmission, ATS Five Star torque converter, and ATS deep transmission pan.
What makes the Stage 5 transmission different?
Stage 5 includes upgraded billet internals, increased clutch capacity, and reinforced components designed to handle extreme horsepower and torque levels.
Is this suitable for high horsepower builds?
Yes. This package is designed for high-performance and competition-level builds as well as extreme towing applications.
Does this transmission support PTO?
Yes. This specific unit is built for 4WD trucks equipped with PTO functionality.
Will this fit my truck?
This package fits 2001-2002 GM HD trucks with the 6.6L LB7 Duramax diesel engine, Allison transmission, and 4WD configuration.
FITMENT
2001-2002 Chevy Silverado 2500HD 6.6L Duramax LB7 Diesel 4WD with PTO
2001-2002 Chevy Silverado 3500 6.6L Duramax LB7 Diesel 4WD with PTO
2001-2002 GMC Sierra 2500HD 6.6L Duramax LB7 Diesel 4WD with PTO
2001-2002 GMC Sierra 3500 6.6L Duramax LB7 Diesel 4WD with PTO
Specifications for ATS 309-855-4248
| Specification | Details |
|---|---|
| Part Number | 309-855-4248 |
| Product Name | ATS Stage 5 Allison LCT1000 Transmission Package |
| Transmission Model | Allison LCT1000 Automatic |
| Engine Fitment | 6.6L Duramax LB7 Diesel |
| Vehicle Fitment | 2001-2002 GM 2500HD / 3500 |
| Drive Configuration | 4WD |
| PTO Compatibility | Yes |
| Included Components | Stage 5 Built Transmission, Five Star Torque Converter, Deep Transmission Pan |
| Performance Level | Stage 5 - Extreme Duty / High Horsepower |
| UPC | Not Available |
| GTIN | Not Available |
| Shipping Information | Freight Shipping Required |
| Core Charge | Core Charge Applies |
| Prop 65 | WARNING: Cancer and Reproductive Harm |
