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COMP Cams 12-256-4 - Comp Cams 'Xtreme Energy' Hydraulic Flat Tappet Camshafts

COMP Cams 12-256-4 - Comp Cams 'Xtreme Energy' Hydraulic Flat Tappet Camshafts

COMP Cams#249-12-256-4

XTREME Energy™ Hydraulic Flat Tappet Camshaft
Lift .449"/.456"
Duration 256/268
RPM Range 1200-5200
  • Fits Applications:
  • 1977-1980
    BUICK
    1955-1996
    CHEVROLET
    1967-1986
    GMC
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COMP Cams 12-256-4 - Comp Cams 'Xtreme Energy' Hydraulic Flat Tappet Camshafts Details

Chevy 262-400ci Small Block 1955-98

  • 1987-98 Computer Controlled
  • Best in 305 or 350 Tuned Port Injected engines

  • COMP Cams 12-256-4 - Comp Cams 'Xtreme Energy' Hydraulic Flat Tappet Camshafts

    The Leading Edge of Valve Train Technology

    Comp Cams Xtreme Energy series are perfect for 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 and greatest in valvetrain technology . 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 springs with these camshafts due to the aggressive lobe designs.

    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.

    COMP Cams 249-12-256-4

    Intake Valve Lift (in.)
    0.449
    Exhaust Valve Lift (in.)
    0.456
    RPM Range
    1000-7000
    Int. Duration @ .050 in. (Deg)
    212
    Exh. Duration @ .050 in. (Deg)
    218
    Int. Duration Advertised (Deg)
    256
    Exh. Duration Advertised (Deg)
    268
    Engine Make/Size
    Chevy Small Block (262-400)
    Lifter Type
    Hydraulic Flat Tappet
    Usage
    Street/Performance
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