This V2 version of our Stage 1 camshaft makes more power and torque everywhere in the curve compared to our legendary LS3 cams. Developed in house, we went back to the drawing board to find even more power and torque. 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. The BTR platinum spring kit would be inducted into the LS aftermarket hall of fame if such a thing existed. Whether you’re putting together a daily driver with a mild cam, a 600 hp N/A stroker, or a turbocharged 1000 hp brawler, our platinum spring kit will make sure your valves are right where your cam wants them to be at all times. They are designed to be used with stock rocker arms. These one piece precision formed pushrods are constructed from SAE 4130 chromoly tubing, centerless ground to exacting tolerances, and case hardened to Rc 60. Beware of competitors who say their pushrods are made from the same 4130 material, because some are not.