BD Diesel 04-06 Chevy Silverado / GMC Sierra 6.6L 4WD RoadMaster Transmission & Converter Package – Part # 1064774SS

The BD Diesel RoadMaster transmission for Allison is engineered for durability and reliable performance in heavy-duty applications. Specifically designed for stock or mildly modified Duramax GM trucks, this transmission features a modified valve body that significantly enhances torque capacity. Notably, the upgrades double the capacity of the C2 clutch, which is typically prone to failure, reducing slip and increasing longevity under demanding towing conditions. The package includes a billet ProForce torque converter, ensuring smooth and consistent clutch engagement, and a deep aluminum pan that adds an extra 3.5 quarts of fluid capacity. This additional fluid volume helps maintain lower transmission temperatures during heavy towing or extended operation, contributing to overall drivetrain reliability. Each transmission assembly undergoes dyno testing before shipment to verify performance standards and ensure customer satisfaction. The complete package provides a straightforward upgrade path for owners looking to improve their truck’s durability and towing efficiency while maintaining stock clutch counts for easy installation and reduced complexity. Built with high-quality components, the RoadMaster transmission is a robust solution that enhances the longevity and performance of your GM Duramax truck’s transmission system.

Features:

• Heavy-duty torque capacity with doubled clutch capacity for C2 and C4 clutches, reducing slip during towing

• Enhanced thermal management with a deep aluminum pan that increases fluid capacity by 3.5 quarts

• Includes billet ProForce torque converter for reliable clutch engagement and smooth operation

• Designed to fit 2004-2006 Chevrolet Silverado 2500 HD, Silverado 3500, and GMC Sierra 2500 HD with 6.6L engine

Fitment:
Chevrolet Silverado 2500 HD Base 2004 to 2005
Chevrolet Silverado 2500 HD LS 2004 to 2006
Chevrolet Silverado 2500 HD LT 2004 to 2006
Chevrolet Silverado 2500 HD WT 2004 to 2006
Chevrolet Silverado 3500 Base 2004 to 2005
Chevrolet Silverado 3500 LS 2004 to 2006
Chevrolet Silverado 3500 LT 2004 to 2006
Chevrolet Silverado 3500 WT 2004
Chevrolet Silverado 3500 WT 2006
GMC Sierra 2500 HD Base 2004 to 2005
GMC Sierra 2500 HD SL 2006
GMC Sierra 2500 HD SLE 2004 to 2006
GMC Sierra 2500 HD SLT 2004 to 2006
GMC Sierra 2500 HD WT 2004 to 2006
GMC Sierra 3500 Base 2004 to 2005
GMC Sierra 3500 SL 2006
GMC Sierra 3500 SLE 2004 to 2006
GMC Sierra 3500 SLT 2004 to 2006
GMC Sierra 3500 WT 2004 to 2006