COMP Cams offers complete component-matched valve train kits that deliver unbeatable performance, durability and ease of installation. All cam kits are fully tested and manufactured to the strictest standards. Each kit’s components were specifically chosen as the best performance match for that particular camshaft so that you can reap the benefits of a perfectly matched “Power Engineered System.” *CL-Kit Cam & Lifter Kit Includes* * Camshaft * Lifters * Assembly Lube * Decals * Instructions PartNumber : ccaCL01-451-8 Description : Cam & Lifter Kit; Includes Xtreme Marine Camshaft Title : CL01-451-8 Cam and Lifter Kit, CBVI XM284HR 12 Advertised Exhaust Duration : 290 Advertised Intake Duration : 284 Basic Operating RPM Range : 2,200-5,800 California Proposition 65 : WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov Cam Type : Hydraulic Roller Camshaft Series : Xtreme Marine Engine Family : Chevrolet GEN VI 454 and 502 c.i. 8 Cylinder (1966-1999) Exhaust Duration at .050 inch Lift : 236 Exhaust Valve Lift : 0.547 Gaskets Included : No Intake Duration at .050 Inch Lift : 230 Intake Valve Lift : 0.547 Kit Type : CL-Kit - Cam and Lifter Kit Lifter Style : Hydraulic Roller Lifters Included : Yes Locks Included : No Retainers Included : No Timing Chain and Gears Included : No Usage : Marine Valve Stem Seals Included : No Camshaft Gear Attachment : 3-Bolt Camshaft Material : Austempered Ductile Iron Lobe Separation : 112 Valve Springs Required : Yes Assembly Lubricant Included : No Intake Duration : 284 Intake Duration @ .050 in. : 230 Exhaust Valve Lift(in) : 0.547 Exhaust Duration : 290 Exhaust Duration @ .050 in. : 236 RPM Range : 2000-9000 Intake Valve Lift(in) : 0.547 Lifter Type : Hydraulic Roller Usage : OEM Engine Components::Camshaft & Lifter Kits