BTR Gen 3 & 4 Truck Norris NSR Cam

BTR Gen III & IV LS Truck Norris No Springs Required Cam

No Springs Required – More Power Everywhere

• Specs: 212/22X duration, .498/.498 lift, 107 LSA
• Intake lobe lift @ TDC: 0.05030
• NSR design – compatible with factory valve springs
• Broad torque and power gains across the RPM range
• Ideal for 1999–2013 Silverado, Sierra, and other LS-powered trucks
• Built from extensive in-house dyno testing and custom lobe design
• Delivers improved performance over BTR's V2 truck cams
• Excellent drivability with noticeable performance improvement