High performance street, stock converter ok, best with 2000+ converter and gears, choppy/thumping idle. K11-600-8 contains the following: 11-600-8 Thumpr 227/241 Hydraulic Roller Cam for Chevrolet Big Block 396-454, 854-16 Retro-Fit Hydraulic Roller Lifter Set for 396-454 Chevrolet Big Block, 2110 Magnum Double Row Timing Set for ’65-’91 396-454 Chevrolet Big Block, 924-16 Performance Street 1.509″ OD Spring; 1.900″ Installed Height; 16 Springs, 612-16 Set of 16 – 10 Degree, 3/8″, Single Groove Locks w/ Lash Cap Recess, 741-16 10 Degree Superlock Steel Retainer Set of 16 for 1.500″-1.550″ OD Valve Spring, 505-16 Set of 16 PTFE Valve Seals for .530″ Guide Size, 3/8″ Valve Stem
- High performance street, stock converter ok, best with 2000+ converter and gears, choppy/thumping idle.
- 1,900-5,500 RPM Operating Range
- 227/241 Duration at .050″. 107 Degree Lobe Separation Angle. 0.547″/0.53″ 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, 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