The Stage 1 Thumpr Cam Kit for LS GEN III 4.8-6.0L is the perfect choice for sound and power in performance trucks. Includes pushrods, LS6+ springs, retainers, locks, spring seats and seals. For Stage 1 Thumpr Cam Kit for GEN III LS 4.8/5.3/6.0L Trucks. Camshaft Series: Thumpr NSR (No Springs Required) Cam Type: Hydraulic Roller. Basic Operating RPM Range: 1,500-6,300. Intake Duration at .050 Inch Lift: 218. Exhaust Duration at .050 inch Lift: 229. Advertised Intake Duration: 272. Advertised Exhaust Duration: 291. Lobe Separation: 111. Intake Valve Lift: 0.614. Exhaust Valve Lift: 0.606. Lifters Included: No. Valve Springs Included: Yes. Assembly Lubricant Included: No. Camshaft Gear Attachment: 3-Bolt.
