Product Description
The ATS 309-854-4248 Stage 5 Allison LCT1000 Transmission Package is the ultimate high-performance upgrade for 2001-2002 GM Silverado and Sierra HD trucks equipped with the 6.6L LB7 Duramax diesel and 4WD drivetrain. Designed for extreme power levels, heavy towing, and competition use, this Stage 5 package delivers maximum strength, reliability, and torque capacity well beyond factory limitations.
This complete ATS transmission package includes a fully built Stage 5 Allison LCT1000 transmission, ATS Five Star torque converter, and ATS deep transmission pan. ATS engineers this system with billet internal components, upgraded clutch packs, and precision calibration to handle high horsepower builds and aggressive driving conditions.
The included Five Star torque converter improves torque multiplication and efficiency, while the deep transmission pan increases fluid capacity and cooling performance. Together, these upgrades help eliminate heat-related failures and provide consistent performance under extreme loads.
Built for serious diesel enthusiasts, racers, and heavy-duty towing applications, the ATS Stage 5 Allison package is one of the most capable transmission upgrades available for the LB7 Duramax platform.
FAQ
What does the ATS Stage 5 Allison package include?
This package includes a Stage 5 built Allison LCT1000 transmission, ATS Five Star torque converter, and ATS deep transmission pan.
What makes the Stage 5 package different?
Stage 5 is designed for extreme performance with upgraded billet internals, higher clutch capacity, and increased torque handling for high-horsepower applications.
Is this transmission good for towing?
Yes. It is ideal for heavy towing, hauling, and performance builds requiring maximum durability.
Will this fit my truck?
This package is designed for 2001-2002 GM HD trucks with the 6.6L LB7 Duramax and 4WD drivetrain.
Do I need supporting modifications?
For best performance, supporting upgrades and tuning are recommended when running high horsepower setups.
FITMENT
2001-2002 Chevrolet Silverado 2500HD 6.6L LB7 Duramax Diesel 4WD
2001-2002 Chevrolet Silverado 3500 6.6L LB7 Duramax Diesel 4WD
2001-2002 GMC Sierra 2500HD 6.6L LB7 Duramax Diesel 4WD
2001-2002 GMC Sierra 3500 6.6L LB7 Duramax Diesel 4WD
Specifications for ATS 309-854-4248
| Specification | Details |
|---|---|
| Part Number | 309-854-4248 |
| Product Name | ATS Stage 5 Allison LCT1000 Transmission Package |
| Transmission Model | Allison LCT1000 |
| Engine Fitment | 6.6L LB7 Duramax Diesel |
| Vehicle Fitment | 2001-2002 GM 2500HD / 3500 |
| Drive Configuration | 4WD |
| Stage Level | Stage 5 (Extreme Performance) |
| Included Components | Built Transmission, Five Star Torque Converter, Deep Transmission Pan |
| Material | Billet Internal Components, Heavy Duty Clutch Packs |
| Performance Benefit | Maximum Torque Capacity and Durability for High HP Builds |
| UPC | Not Available |
| GTIN | Not Available |
| Shipping Information | Freight Shipping Required |
| Core Charge | Core Charge Applies |
| Prop 65 | WARNING: Cancer and Reproductive Harm |
