Brian Tooley Racing BTR Turbo Stage 3 Camshaft V2 Fits 1997-2013 LS-Based Engines 4.8L 5.3L 5.7L 6.0L 6.2L Specs: 224/24x .618"/.618" 114LSA, 3 Bolt Pattern BTR went back to the drawing board to find even more power and torque when creating this latest version of their ever-popular Stage 3 Turbocharged camshaft. This V2 version has revised valve events designed to help produce more mid range power with no loss in top end power compared to the previous Stage 3 camshaft. This camshaft has a moderate idle and makes great mid and top end power at the sacrifice of some low end torque when used in smaller cubic inch engines. Works well with 5.3/6.0 combos being pressurized by an S400 (or similar size) turbocharger. These new BTR lobe designs were Spintron and Engine Dyno tested to achieve the highest overall power curve while also maintaining strict valvetrain stability and durability standards.