Brian Tooley Racing BTR 33350135 Stage 4 N/A Camshaft for GM Gen IV LS3 6.2LSpecs: 233 250 . 618" . 596" 113+5 LOBES DESIGNED IN HOUSE BY BTR The Stage 4 LS3 grind has been utilized on many max effort combinations with great success. We see 500+ whp with the addition of proper bolt ons, while maintaining the durability you come to expect from BTR components. It is ground with nitrous in mind as well, working well with up to 300 horsepower worth of night night juice. For proper piston to valve clearance, you cannot mill your