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COMP Cams 11-651-47

Comp Cams Xtreme Energy Hydraulic Flat Tappet Camshafts

COMP Cams 11-651-47

249-11-651-47

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COMP Cams 11-651-47 Comp Cams Xtreme Energy Hydraulic Flat Tappet Camshafts $210.99
Xtreme Energy Hydraulic Flat Tappet Camshaft with 18736542 Firing Order 4 & 7 swap firing order
Lift .574"/.578"
Duration 284°/296°
RPM Range 2300 to 6500

COMP Cams 11-651-47 Details

Chevy 396-454ci Big Block 1965-96

  • 4 & 7 Swap Firing Order

    Hydraulic-Street/Strip, 2800+ stall, rough idle, 9.5:1 compression.

  • Specifications:

    Intake Valve Lift (in.)
    0.574
    Exhaust Valve Lift (in.)
    0.578
    RPM Range
    2300-6500
    Int. Duration @ .050 in. (Deg)
    240
    Exh. Duration @ .050 in. (Deg)
    246
    Int. Duration Advertised (Deg)
    284
    Exh. Duration Advertised (Deg)
    296
    Engine Make/Size
    Chevy Big Block (396-454)
    Lifter Type
    Mechanical Flat Tappet
    Usage
    Street/Performance
    Advertised Duration
    284 int./296 exh.
    Advertised Exhaust Duration
    296
    Advertised Intake Duration
    284
    Basic Operating RPM Range
    2,300-6,500
    Cam Style
    Hydraulic flat tappet
    Computer-Controlled Compatible
    No
    Duration at 050 inch Lift
    240 int./246 exh.
    Exhaust Duration at 050 inch Lift
    246
    Exhaust Valve Lift with Factory Rocker Arm Ratio (
    0.578
    Intake Duration at 050 inch Lift
    240
    Intake Valve Lift with Factory Rocker Arm Ratio (i
    0.574
    Quantity
    Sold individually
    Valve Lift with Factory Rocker Arm Ratio
    0.574 int./0.578 exh.
    Valve Springs Required
    Yes
    Lobe Separation (Deg)
    110
    Manufacturer's Part Number:
    11-651-47

    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.

    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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