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COMP Cams Xtreme Energy Mechanical Roller Camshaft Big Block Chevy 1965-96 Lift: .639"/.646"

COMP Cams 11-770-8

249-11-770-8

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COMP Cams Xtreme Energy Mechanical Roller Camshaft Big Block Chevy 1965-96 Lift: .639"/.646" $268.99
Xtreme Energy Mechanical Roller Camshaft
Big Block Chevy 1965-96
  • Lift: .639"/.646"
  • Duration: 274°/280°
  • Lobe Separation Angle: 110°
  • RPM Range: 2200-6200

  • COMP Cams 11-770-8 Details

    Chevy 396-454ci Big Block 1965-96

    Mechanical Roller-Great for Power Touring. Needs 2500 stall, easy on parts. Very reliable power. Rough idle.

    Specifications:

    Engine Make/Size
    Chevy Big Block (396-454)
    RPM Range
    2200-6200
    Lifter Type
    Mechanical Roller
    Int. Duration Advertised (Deg)
    274
    Exh. Duration @ .050 in. (Deg)
    242
    Exh. Duration Advertised (Deg)
    280
    Exhaust Valve Lift (in.)
    0.646
    Int. Duration @ .050 in. (Deg)
    236
    Intake Valve Lift (in.)
    0.639
    Usage
    Street/Performance
    Quantity
    Sold individually
    Lobe Separation (Deg)
    110
    Exhaust Valve Lift with Factory Rocker Arm Ratio (
    0.646
    Intake Valve Lift with Factory Rocker Arm Ratio (i
    0.639
    Valve Lift with Factory Rocker Arm Ratio
    0.639 int./0.646 exh.
    Advertised Duration
    274 int./280 exh.
    Computer-Controlled Compatible
    No
    Valve Springs Required
    Yes
    Cam Style
    Mechanical roller tappet
    Exhaust Duration at 050 inch Lift
    242
    Intake Duration at 050 inch Lift
    236
    Duration at 050 inch Lift
    236 int./242 exh.
    Advertised Intake Duration
    274
    Advertised Exhaust Duration
    280
    Basic Operating RPM Range
    2,200-6,200
    Grind Number
    CB XR274 R-10
    Exhaust Valve Lash (in.)
    0.018
    Intake Valve Lash (in.)
    0.016
    Manufacturer's Part Number:
    11-770-8
    Shipping Weight:
    10.25
    Package Height:
    24.5
    Package Depth:
    2.7
    Package Width:
    2.8

    The Leading Edge of Valve Train Technology

    Comp Cams Xtreme Energy series camshafts can be used in any street or street/strip application where both throttle response and top-end horsepower is desired. These cams 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.

  • Does COMP Cams 11-770-8 fit your vehicle?

    Narrow Results

    1996 GMC G35/G3500 VAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 7.4
    • SubModel: RALLY
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1996 GMC G35/G3500 VAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 7.4
    • SubModel: MAGNAVAN
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1996 GMC G35/G3500 VAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 7.4
    • SubModel: RALLY STX
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1996 CHEVROLET G30 VAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 7.4
    • SubModel: SPORTVAN
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1996 GMC G35/G3500 VAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 7.4
    • SubModel: VANDURA
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )
    Items You Need
    Some parts are not legal for use in California or other states with similar laws / regulations

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    WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.