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COMP Cams 12-769-8 - Comp Cams 'Xtreme Energy' Mechanical Roller Camshafts



COMP Cams 12-769-8 - Comp Cams 'Xtreme Energy' Mechanical Roller Camshafts
COMP Cams 12-769-8 - Comp Cams 'Xtreme Energy' Mechanical Roller Camshafts
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JEGS Part Number: 249-12-769-8

Xtreme Energy Mechanical Roller Camshaft
Small Block Chevy 1955-98
  • Lift: .552"/.564"
  • Duration: 268°/274°
  • Lobe Separation Angle: 110°
  • RPM Range: 2000-6000

    COMP Cams 12-769-8 Details

    Chevy 262-400ci Small Block 1955-98

      Camshaft Specification Table
    Part Number 12-769-8
    Engine 1955-1998 Chevrolet
    262ci-400ci
    8cyl.
    Grind Number CS XR268 R-10
    Description  

      Intake Exhaust
    Valve Adjustment 0.016 0.018
    Gross Valve Lift 0.552 0.564
    Duration At 0.015 Tappet Lift 268 274

    Valve Timing At 0.015    
      Open Close
    Intake 28 60
    Exhaust 71 23

    These Specs Are For The Cam Installed At 106 Intake CL
      Intake Exhaust
    Duration At 0.05 230 236
    Lobe Lift 0.368 0.376
    Lobe Separation 110  

    Recommended Valve Springs 249-977-16

    Comp Cams 'Xtreme Energy' Mechanical Roller Camshafts

    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.

  • COMP Cams 12-769-8

    Intake Valve Lift (in.)
    0.522
    Exhaust Valve Lift (in.)
    0.564
    RPM Range
    2000-6000
    Int. Duration @ .050 in. (Deg)
    230
    Exh. Duration @ .050 in. (Deg)
    236
    Int. Duration Advertised (Deg)
    268
    Exh. Duration Advertised (Deg)
    274
    Engine Make/Size
    Chevy Small Block (262-400)
    Lifter Type
    Mechanical Roller
    Usage
    Street/Performance
    Advertised Duration
    268 int./274 exh.
    Advertised Exhaust Duration
    274
    Advertised Intake Duration
    268
    Basic Operating RPM Range
    2,000-6,000
    Cam Style
    Mechanical roller tappet
    Computer-Controlled Compatible
    No
    Duration at 050 inch Lift
    230 int./236 exh.
    Exhaust Duration at 050 inch Lift
    236
    Exhaust Valve Lash (in.)
    0.018
    Exhaust Valve Lift with Factory Rocker Arm Ratio (
    0.564
    Grind Number
    XR268 R
    Intake Duration at 050 inch Lift
    230
    Intake Valve Lash (in.)
    0.016
    Intake Valve Lift with Factory Rocker Arm Ratio (i
    0.552
    Quantity
    Sold individually
    Valve Lift with Factory Rocker Arm Ratio
    0.552 int./0.564 exh.
    Valve Springs Required
    Yes
    Lobe Separation (Deg)
    110
    Manufacturer's Part Number:
    12-769-8
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