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COMP Cams SK11-422-8

Comp Cams Xtreme Energy Hydraulic Roller Camshafts

COMP Cams SK11-422-8

249-SK11-422-8

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COMP Cams SK11-422-8 Comp Cams Xtreme Energy Hydraulic Roller Camshafts $724.99
Xtreme Energy Retro-Fit XR270HR Hydraulic Roller Camshaft Small Kit
Lift: .510"/.510"
Duration: 270/276
Lobe Separation Angle: 110°
RPM Range: 1600-5400

COMP Cams SK11-422-8 Details

Chevrolet Big Block 396-454 c.i. 8 CYL. 1965-1996

  • Performance application, great mid-range torque, likes headers

    Installation Notes:

  • Stock springs cannot be used
  • Requires thrust button & wear plate

  • Specifications:

    Exhaust Valve Lift (in.)
    0.51
    Intake Valve Lift (in.)
    0.510
    RPM Range
    1600-5400
    Int. Duration @ .050 in. (Deg)
    218
    Exh. Duration @ .050 in. (Deg)
    224
    Int. Duration Advertised (Deg)
    270
    Exh. Duration Advertised (Deg)
    276
    Engine Make/Size
    Chevy Big Block (396-454)
    Lifter Type
    Hydraulic Roller
    Usage
    Street/Performance
    Gaskets Included
    No
    Advertised Duration
    270 int./276 exh.
    Advertised Exhaust Duration
    276
    Advertised Intake Duration
    270
    Assembly Lubricant Included
    No
    Basic Operating RPM Range
    1,600-5,400
    Cam Style
    Hydraulic roller tappet
    Computer-Controlled Compatible
    No
    Duration at 050 inch Lift
    218 int./224 exh.
    Exhaust Duration at 050 inch Lift
    224
    Exhaust Valve Lift with Factory Rocker Arm Ratio (
    0.51
    Grind Number
    XR270HR
    Intake Duration at 050 inch Lift
    218
    Intake Valve Lift with Factory Rocker Arm Ratio (i
    0.51
    Lifter Style
    Hydraulic roller
    Lifters Included
    Yes
    Locks Included
    No
    Pushrods Included
    No
    Quantity
    Sold as a kit
    Retainers Included
    No
    Rocker Arms Included
    No
    Timing Chain and Gears Included
    Yes
    Timing Chain Style
    Double roller
    Valve Lift with Factory Rocker Arm Ratio
    0.510 int./0.510 exh.
    Valve Springs Included
    No
    Valve Springs Required
    Yes
    Valve Stem Seals Included
    No
    Lobe Separation (Deg)
    110
    Manufacturer's Part Number:
    SK11-422-8

    The Leading Edge of Valve Train Technology

    Comp Cams Xtreme Energy series can be used in any street or street/strip application where both throttle response and top-end horsepower is desired. These camshafts are designed to take advantage of the latest improvements in valve train components and the newest developments in camshaft design. Their aggressive lobe design produces better throttle response and top end horsepower than other cams with the same duration @ .050'' lift, while delivering increased engine vacuum. We do not recommend the use of stock valve train components with these camshafts due to the aggressive lobe designs.

    Features:
  • Quicker opening lobe profiles deliver increased responsiveness & more area under the lift curve
  • More vacuum allows an increase in duration for improved performance and assists power brakes
  • Excellent performance in street carbureted applications
  • Best performance with aftermarket intake manifolds, headers, lower gear ratios

    Camshaft & Lifter Kits are indicated by a CL in their part number and include Camshaft, Lifters, Assembly Lube, Decals, and Instructions.

    Complete Kits are indicated by a K in their part number and include Camshaft, Lifters, Timing Chain & Gears, Valve Springs, Retainers, Locks, Assembly Lube, Decals, and Instructions.

    Small Kits are indicated by a SK in their part number and include Camshaft, Lifters, Timing Chain Set, Assembly Lube, Decals, and Instructions.

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