Industrial PDM-DMXAFS1 Alternate Fire Billet Race Stage 1 Camshaft with Key | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Features: - Supports builds over 1000 horsepower - Alternate firing order reduces crankshaft stress - Billet steel construction for maximum strength - Keyed cam design prevents gear slippage - Designed for high-performance Duramax builds - Compatible with 2001–2016 6.6L Duramax engines - Requires .085 inch valve reliefs in pistons - Requires 95 lb upgraded valve springs - Ideal for drag, sled pull, or competition use - Enhances durability under extreme load and RPM - Precision-machined for race-level performance - Designed for serious engine upgrades only Unlock Maximum Power With Proven Race Level Precision When you're chasing four-digit horsepower and want your Duramax to hold up under brutal power and torque, the Industrial PDM-DMXAFS1 Alternate Fire Billet Race Stage 1 Camshaft is the upgrade that helps get you there. Built from billet steel and engineered for absolute strength, this cam is designed to handle well over 1000 horsepower without compromise. The alternate firing order helps reduce stress on the crankshaft, giving your engine more balance and longevity during high-RPM pulls. It's keyed to ensure your cam gear stays perfectly aligned, even under aggressive tuning and extreme load. This is not a bolt-on cosmetic mod, this is real race hardware for real horsepower junkies. Whether you're building a dedicated drag truck, sled puller, or extreme street machine, this camshaft offers the foundation for reliable high-end performance. Pair it with the required .085 valve reliefs and 95 lb valve springs, and you're well on your way to a rock-solid top-end setup. Engineered For Hardcore Duramax Powertrain Builds The Industrial PDM-DMXAFS1 Stage 1 Camshaft is a billet race-grade component specifically developed for 2001–2016 GM 6.6L Duramax engines pushing past 1000 horsepower. Its alternate firing order helps distribute internal forces more evenly across the crankshaft, reducing vibration and enhancing bottom-end durability under extreme power. The camshaft is precision-machined from billet material for superior strength and long-term resistance to twist and wear, especially in high-RPM applications. A keyed design ensures secure timing gear alignment, eliminating the risk of cam gear slippage common in high-stress setups. This camshaft requires .085 inch valve reliefs and upgraded 95 lb valve springs, reinforcing its purpose-built nature for competition-level builds. It is best suited for engines with forged internals, aggressive fueling systems, and turbo configurations capable of supporting serious airflow. Whether you're designing for drag racing or sled pulling, this cam provides the durability and performance edge needed in top-tier Duramax applications. It’s built to perform where standard cams fall short. Fits: 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax Notes: - Designed for 2001–2016 GM 6.6L Duramax engines - Alternate firing order helps reduce crankshaft stress - Capable of supporting builds over 1000 horsepower - Constructed from billet steel for maximum strength - Keyed camshaft design prevents gear slippage - Requires .085 inch valve reliefs in pistons - Must be used with 95 lb valve springs - Intended for high-performance and race engine builds - Ideal for drag racing, sled pulling, and competitive use - Not designed for stock or mild performance applications