ROADMASTER TRANSMISSION & CONVERTER PACKAGE ALLISON 1000 CHEVROLET SILVERADO / GMC SIERRA 6.6L L5P DURAMAX 2017-2019

This transmission is designed for stock or mildly modified 2017-2019 L5P Duramax engines. It is an ideal upgrade for daily drivers, trucks that tow, and those with mild performance tunes who need more reliability. — The RoadMaster package is not a full-race build, but rather a significant durability upgrade for the stock Allison 1000. Its main purpose is to correct factory weak points, primarily by increasing clutch holding capacity to handle the stress of towing or mild tunes. It accomplishes this with a modified valve body that boosts line pressure by up to 68%, preventing clutch slippage under load. The build maintains stock clutch counts to preserve a smooth, OEM-style shift feel, making it perfect for owners who want to prevent clutch and converter damage without creating a harsh-shifting truck.

The BD RoadMaster package improves upon the stock transmission by significantly increasing clutch holding power, enhancing cooling capacity, and addressing known internal durability issues. It bundles these upgrades with a new torque converter for a complete solution. — The key improvements in this package directly target the weak points of the factory Allison 1000 in 2017-2019 Duramax trucks: — • Increased Torque Capacity: A modified valve body boosts line pressure by up to 68%, dramatically increasing the holding force of the clutches to prevent slipping and wear. • Enhanced Cooling: The package includes a BD deep aluminum sump pan which adds 3.5 quarts of fluid capacity, helping to lower operating temperatures, especially during high-stress situations like towing. • Increased Durability: The transmission receives internal pump upgrades to improve lubrication and address known OE weaknesses. • Complete Package: Every RoadMaster transmission includes a remanufactured ProForce torque converter, ensuring reliable converter clutch apply and durability.

Yes, every RoadMaster transmission package includes a remanufactured BD ProForce torque converter. It also includes a deep aluminum transmission pan. — This is a complete transmission solution designed to upgrade the entire system for better reliability. The package includes the RoadMaster transmission itself, which features a modified valve body and internal pump upgrades. Also included is a precisely matched, remanufactured ProForce torque converter built for reliable daily driving and towing. Finally, the package is rounded out with the BD deep aluminum pan, which increases fluid capacity by 3.5 quarts for superior heat dissipation. You receive a fully integrated system right out of the crate.

This transmission package is a direct-fit upgrade for 2017, 2018, and 2019 Chevrolet Silverado and GMC Sierra 2500 HD and 3500 HD trucks equipped with the 6.6L L5P Duramax engine. You must order the specific part number for your 2WD or 4WD truck. — Fitment is specific to the L5P Duramax platform and the Allison 1000 transmission. It is critical to order the correct part number to ensure proper installation and function: — • 2WD Models: Use part number 1064792SS. • 4WD Models: Use part number 1064794SS. This product requires the return of your original transmission as a core. A core charge (CD1064794SS) of $2750 will be applied at the time of purchase and is refunded upon the return of a rebuildable core.

No, the RoadMaster transmission is specifically engineered to provide smooth, seamless, OEM-style shift quality. It is designed for durability and reliability without the harshness of a race transmission. — While the internal modifications significantly increase performance, they are designed to maintain driver comfort. The transmission uses stock clutch counts, which is key to preserving the factory shift feel. The modified valve body increases line pressure by up to 68% to improve clutch holding capacity, but this pressure is applied in a controlled manner to avoid aggressive or jarring shifts. This makes the RoadMaster ideal for truck owners who tow or run mild tunes and want peace of mind without sacrificing the smooth operation of their daily driver.

The BD RoadMaster transmission package is covered by a 24-month / 100,000-mile warranty for parts. It also includes a 12-month / 24,000-mile warranty for labor if installed by a professional shop. — This comprehensive warranty provides significant peace of mind for such a critical component. The parts warranty covers the transmission, the ProForce torque converter, and all other included BD components for two full years or 100,000 miles, whichever comes first. The separate labor warranty covers costs associated with removal and reinstallation for a period of one year or 24,000 miles, helping to protect you from unexpected expenses in the event of a warrantable issue.

The estimated installation time for this transmission package is 13.2 hours. This is a complex job that should be performed by an experienced technician with the proper tools and a vehicle lift. — The RoadMaster is designed as a direct, bolt-in replacement for the factory Allison 1000, but the process is labor-intensive. A professional installer will need to disconnect driveshafts, cooler lines, and electrical harnesses, remove the transfer case (on 4WD models), and safely lower the nearly 300lb factory transmission before installing the new unit. The BD internal job code for this installation is EMS Code 4. No special tuning or programming is required for the transmission itself upon installation.