Big Mutha Thumpr Hydraulic Roller CamshaftGM LS SeiresLift: .573"/.558"Duration: 291°/311°Lobe Separation Angle: 109°RPM Range: 2600-6800 1997-Current Three-Bolt 4.8/5.3/5.7/6.0L LS1/Gen III/IV Valve Setting: Intake - Hyd, Exhaust - Hyd RPM Operating Range: 2600 to 6800 Cam Grind Number: 283THR7 Duration Advertised: Intake - 291, Exhaust - 311 Duration @ .050'': Intake - 235, Exhaust - 249Valve Lift: Intake - .573, Exhaust - .558 Lobe Sep. Angle: 109°GM, 4.8, 5.3, 5.7, 6.0, 6.2, 7.0, LS1, LS2, LS3, LS4, LS6, LS7, LSA, LS9, Camaro, Silverado, LS Swap, 383, 350, SBC, Chevelle, Yukon, L92, LM7, 325, GMC, Trailblazer, Corvette, GM LS, GEN III, GEN 3, GEN IV, GEN 4, DOD, AFM, VVT, BTR, Texas.