Genuine BTR TRUCK NORRIS LS Truck Cam Kit Fits 1999-2013 4.8L, 5.3L and 5.7L LS Based Engines (Silverado, Sierra, Tahoe, Yukon) LS1 LS6 LM7 L59 LY5 LMG LMF LH6 LC9 LR4 LY2 L20 L33 LH9 LM4 Does not work with direct injection equipped trucks (2015+) Includes: Camshaft: BTR Truck Norris Camshaft Springs: BTR SP011 Beehive Valve Springs Pushrods: BTR 7.400" Length 5/16" Chromoly Pushrods Lifters: BTR Delphi LS7 Lifters (16) Trays: GM Lifter Guide Trays (4) Head Gaskets: MLS Multilayer Steel (FOR 4.8L 5.3L 5.7L ONLY) (2) Seals: Valve Seals (16), Timing cover gasket, water pump gaskets (2), front crankshaft seal and GM damper bolt PLEASE NOTE: · VVT engines will require a VVT removal kit. · If your engine was originally equipped with a 1-bolt camshaft then a 3 bolt conversion kit is needed separately. · DOD/AFM Engines will require blocking off the oil ports in the block or switching to a non-DOD valley cover. · BTR does not offer a **on the lifters TRUCK NORRIS Specs: 212/22X, .552/.552, 107 LSA 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. Brian Tooley Racing Notes: Completely designed in house. OEM stall torque converter compatible. Idle note is similar to our more aggressive truck grinds. More power. More Torque. Less Compromise. This camshaft shines across the board and delivers the end user an experience that truly embodies the namesake. This cam has also been friendly with OEM torque converters in testing.