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COMP Cams 51-413-9 - Comp Cams 'Xtreme Energy' Hydraulic Roller Camshafts



COMP Cams 51-413-9 - Comp Cams 'Xtreme Energy' Hydraulic Roller Camshafts
COMP Cams 51-413-9 - Comp Cams 'Xtreme Energy' Hydraulic Roller Camshafts

JEGS Part Number: 249-51-413-9

Xtreme Energy Retro-Fit XR264HR Hydraulic Roller Camshaft
Lift: .487''/.495''
Duration: 264°/270°
Lobe Separation Angle: 110°
RPM Range: 1000-5000
  • Fits Applications:
  • 1977-1980
    BUICK
    1979
    OLDSMOBILE
    1959-1981
    PONTIAC
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COMP Cams 51-413-9 Details

Pontiac 265-455ci 8 cyl. 1955-1981

  • Produces Better Throttle Response
  • Produces Top Engine Horsepower
  • Delivers Increased Engine Vacuum
  • 1 Year Limited Warranty

  • Comp Cams 'Xtreme Energy' Hydraulic Roller Camshafts

    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.

  • COMP Cams 51-413-9

    Intake Valve Lift (in.)
    0.487
    Exhaust Valve Lift (in.)
    0.495
    RPM Range
    1000-5000
    Int. Duration @ .050 in. (Deg)
    212
    Exh. Duration @ .050 in. (Deg)
    218
    Int. Duration Advertised (Deg)
    264
    Exh. Duration Advertised (Deg)
    270
    Lifter Type
    Hydraulic Roller
    Engine Make/Size
    Pontiac 265-455
    Usage
    Street/Performance
    Advertised Duration
    264 int./270 exh.
    Advertised Exhaust Duration
    270
    Advertised Intake Duration
    264
    Basic Operating RPM Range
    1,000-5,000
    Cam Style
    Hydraulic roller tappet
    Computer-Controlled Compatible
    No
    Duration at 050 inch Lift
    212 int./218 exh.
    Exhaust Duration at 050 inch Lift
    218
    Exhaust Valve Lift with Factory Rocker Arm Ratio (
    0.495
    Grind Number
    P8 XR264HR-10
    Intake Duration at 050 inch Lift
    212
    Intake Valve Lift with Factory Rocker Arm Ratio (i
    0.487
    Quantity
    Sold individually
    Valve Lift with Factory Rocker Arm Ratio
    0.487 int./0.495 exh.
    Valve Springs Required
    Yes
    Lobe Separation (Deg)
    110
    Manufacturer's Part Number:
    51-413-9
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