{"product_id":"industrial-injection-pdm-dmxafs1-alternate-fire-billet-race-stage-1-camshaft-w-key-01-16-6-6l-duramax","title":"Industrial PDM-DMXAFS1 Alternate Fire Billet Race Stage 1 Camshaft with Key | 2001-2016 GM Silverado\/Sierra 2500HD\/3500HD 6.6L Duramax","description":"\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e \n\n\u003cul\u003e\n  \u003cli\u003eSupports builds over 1000 horsepower\u003c\/li\u003e\n  \u003cli\u003eAlternate firing order reduces crankshaft stress\u003c\/li\u003e\n  \u003cli\u003eBillet steel construction for maximum strength\u003c\/li\u003e\n  \u003cli\u003eKeyed cam design prevents gear slippage\u003c\/li\u003e\n  \u003cli\u003eDesigned for high-performance Duramax builds\u003c\/li\u003e\n  \u003cli\u003eCompatible with 2001–2016 6.6L Duramax engines\u003c\/li\u003e\n  \u003cli\u003eRequires .085 inch valve reliefs in pistons\u003c\/li\u003e\n  \u003cli\u003eRequires 95 lb upgraded valve springs\u003c\/li\u003e\n  \u003cli\u003eIdeal for drag, sled pull, or competition use\u003c\/li\u003e\n  \u003cli\u003eEnhances durability under extreme load and RPM\u003c\/li\u003e\n  \u003cli\u003ePrecision-machined for race-level performance\u003c\/li\u003e\n  \u003cli\u003eDesigned for serious engine upgrades only\u003c\/li\u003e\n\u003c\/ul\u003e \n\n\u003ch4\u003e Unlock Maximum Power With Proven Race Level Precision \u003c\/h4\u003e \n\n\u003cp\u003e 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. \u003c\/p\u003e \n\n\u003ch4\u003e Engineered For Hardcore Duramax Powertrain Builds \u003c\/h4\u003e \n\n\u003cp\u003eThe 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. \u003c\/p\u003e \n\n\u003cp\u003e\u003cstrong\u003e Fits: \u003c\/strong\u003e 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 GM Silverado\/Sierra 2500HD\/3500HD 6.6L Duramax \u003c\/p\u003e \n\n\u003cp\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e \u003c\/p\u003e\u003cul\u003e\n  \u003cli\u003eDesigned for 2001–2016 GM 6.6L Duramax engines\u003c\/li\u003e\n  \u003cli\u003eAlternate firing order helps reduce crankshaft stress\u003c\/li\u003e\n  \u003cli\u003eCapable of supporting builds over 1000 horsepower\u003c\/li\u003e\n  \u003cli\u003eConstructed from billet steel for maximum strength\u003c\/li\u003e\n  \u003cli\u003eKeyed camshaft design prevents gear slippage\u003c\/li\u003e\n  \u003cli\u003eRequires .085 inch valve reliefs in pistons\u003c\/li\u003e\n  \u003cli\u003eMust be used with 95 lb valve springs\u003c\/li\u003e\n  \u003cli\u003eIntended for high-performance and race engine builds\u003c\/li\u003e\n  \u003cli\u003eIdeal for drag racing, sled pulling, and competitive use\u003c\/li\u003e\n  \u003cli\u003eNot designed for stock or mild performance applications\u003c\/li\u003e\n\u003c\/ul\u003e  ","brand":"Industrial Injection","offers":[{"title":"Default Title","offer_id":68032369066257,"sku":"IIS-PDM-DMXAFS1","price":1760.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/0477\/1089\/files\/PDM-DMXAFS1_2001.jpg?v=1794465034","url":"https:\/\/gautoparts.com\/products\/industrial-injection-pdm-dmxafs1-alternate-fire-billet-race-stage-1-camshaft-w-key-01-16-6-6l-duramax","provider":"Guaranteed Auto Parts","version":"1.0","type":"link"}