Brian Tooley Racing BTR Truck Norris Cam Kit Package Includes: BTR Truck Norris Camshaft for LS Truck BTR .560" Lift Beehive Valve Springs BTR Valve Seal Set BTR Truck Norris Camshaft Specs: 212/22X, .552/.552, 107 LSA The Truck Norris will deliver a roundhouse kick in the pants to your 1999-2013 Silverado or Sierra. Developed from hundreds of hours of in house cam lobe design and dyno testing, this camshaft has more power and torque everywhere in the curve compared to our legendary V2 truck cams. - Brian Tooley RacingĀ These camshafts are MADE IN THE USA! The Truck Norris cam kit is intended for use in 99+ GM Trucks with the V8 LS based 4.8, 5.3, and 6.0 engines. Not intended for use in direct injection equipped trucks (2015+).