COMP Cams K11-600-4 Thumpr 227/241 Hydraulic Flat Cam K-Kit for Chevrolet Big Block 396-454

High performance street, stock converter ok, best with 2000+ converter and gears. Choppy/thumping idle. K11-600-4 contains the following: 11-600-4 Thumpr 227/241 Hydraulic Flat Cam for Chevrolet Big Block 396-454, 812-16 High Energy Hydraulic Flat Lifter Set for Chevrolet Small and Big Block., 2110 Magnum Double Row Timing Set for '65-'91 396-454 Chevrolet Big Block, 911-16 Valve Springs, 612-16 Set of 16 - 10 Degree, 3/8", Single Groove Locks w/ Lash Cap Recess, 748-16 10 Degree Superlock Steel Retainer Set of 16 for 1.500"-1.550" OD Valve Spring, 504-16 Set of 16 Umbrella Valve Seals for Stock Guide Size, 3/8" Valve Stem

• High performance street, stock converter ok, best with 2000+ converter and gears. Choppy/thumping idle.
• 1,800-5,600 RPM Operating Range
• 227/241 Duration at .050". 107 Degree Lobe Separation Angle. 0.498"/0.483" Valve Lift
• K Kits vary in their contents, but generally contain a camshaft, a set of lifters, valve springs, retainers, locks, valve seals, timing set, assembly lubricant, decals and instructions. Check description for more accurate listing of kit contents.
• Early intake valve opening and long exhaust duration create optimum overlap for powerful, hard-hitting exhaust note. Best with aftermarket converters and more rear gear.
• Perfect choice for muscle cars and street rods - Three unique cam designs: Thumpr, Mutha' Thumpr and Big Mutha' Thumpr deliver excellent horsepower gains and broad torque curve.
• Fits Chevrolet 396-454 Mark IV Big Block
• Made in USA