BTR Brian Tooley L83 Truck Norris Camshaft Fits 2014-2019 5.3L L83 L8B Gen V Engines (8th Digit of VIN = C or R) Specs: 21x/22x .540"/.540" 111 LSA +14% fuel lobe The Gen V 5.3L Truck Norris grind is a popular choice for those looking to convert from AFM on their L83 engine and add that aggressive idle everyone loves. With great power gains and OEM driving characteristics, this camshaft works well with stock converters. Brian Tooley Racing has taken the lessons learned from their legendary LS truck camshaft line and applied that knowledge to the 2014-newer Gen V engines. Countless hours of in-house dyno development and Spintron research has allowed them to unlock strong power gains within the restraints of the L83 engine's limited piston to valve clearance, all while still maintaining VVT system function to make for broad, usable powerbands for your truck or SUV. All BTR L83 camshafts come with VVT Target Angle table specs on the cam card, making it easy for your tuner to quickly dial in the VVT function for the best powerband possible. Note: This listing is for the L83 version of the Truck Norris only (2014-2019 with "C" for 8th digit of VIN). If you have an L84 or L82 engine (2019-newer with "D" or "F" for the 8th digit of VIN), see our other listing for those engines.