BTR Brian Tooley TRUCK NORRIS Camshaft For 1999-2013 GM Gen3/4 LS Truck Engines 4.8, 5.3, 6.0, 6.2 Camshaft Specs: 212/22X .552"/.552" 107 LSA 3 Bolt Pattern The Truck Norris will deliver a roundhouse kick in the pants to your 1999-2013 GM V8 Truck or SUV! 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 BTR's legendary V2 truck cams. It has an idle sound similar to more aggressive truck camshafts, yet will behave well with stock torque converters. Our kit options take the guesswork out and include the following: Camshaft only: BTR Truck Norris Camshaft by itself. Camshaft, Springs and valve stem seals: BTR Truck Norris Cam, high quality beehive springs, valve stem seals. Camshaft, Springs, valve stem seals and Pushrods: BTR Truck Norris Cam, beehive springs, valve stem seals and 7.400" long, 5/16" Chromoly Pushrods with .080" wall thickness. Gasket kit: Includes Timing cover gasket, water pump gaskets, front crankshaft seal, and GM damper bolt INTRODUCING TRUCK NORRIS. The Brian Tooley R&D team has been hunkered down for months, buried in their work, and driven to provide a camshaft worthy of the name TRUCK NORRIS. After countless designs, grinds, Spintron sessions, Superflow engine dyno tests, we are proud to introduce the newest addition to our Gen 3/4 LS Truck Cam lineup.