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COMP Cams 12-418-8

Xtreme Marine XM276HR Retro-Fit Hydraulic Roller Camshaft Only Lift .503"/.510" Duration 276°/282° RPM Range 1800-5800

COMP Cams 12-418-8

249-12-418-8

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COMP Cams 12-418-8 Xtreme Marine XM276HR Retro-Fit Hydraulic Roller Camshaft Only Lift .503"/.510" Duration 276°/282° RPM Range 1800-5800 $283.99
Xtreme Marine XM276HR Retro-Fit Hydraulic Roller Camshaft Only
Lift .503"/.510"
Duration 276°/282°
RPM Range 1800-5800

COMP Cams 12-418-8 Details

Chevrolet 262-400ci 1955-1998

  • Retro-Fit

    Hydraulic Roller-Good for jet with A impeller, strong mid-range power, needs good exhaust.

  • Specifications:

    Intake Valve Lift (in.)
    0.503
    Exhaust Valve Lift (in.)
    0.51
    RPM Range
    1800-5800
    Int. Duration @ .050 in. (Deg)
    224
    Exh. Duration @ .050 in. (Deg)
    230
    Int. Duration Advertised (Deg)
    276
    Exh. Duration Advertised (Deg)
    282
    Engine Make/Size
    Chevy Small Block (262-400)
    Lifter Type
    Hydraulic Flat Tappet
    Usage
    Marine
    Lobe Separation (Deg)
    112
    Advertised Duration
    276 int./282 exh.
    Advertised Exhaust Duration
    282
    Advertised Intake Duration
    276
    Basic Operating RPM Range
    1,800-5,800
    Cam Style
    Hydraulic roller tappet
    Computer-Controlled Compatible
    No
    Duration at 050 inch Lift
    224 int./230 exh.
    Exhaust Duration at 050 inch Lift
    230
    Exhaust Valve Lift with Factory Rocker Arm Ratio (
    0.51
    Grind Number
    CS XM276HR
    Intake Duration at 050 inch Lift
    224
    Intake Valve Lift with Factory Rocker Arm Ratio (i
    0.503
    Quantity
    Sold individually
    Valve Lift with Factory Rocker Arm Ratio
    0.503 int./0.510 exh.
    Valve Springs Required
    Yes
    Manufacturer's Part Number:
    12-418-8

    If you're heading to the great outdoors, Comp Cams offers camshafts designed specifically for marine applications where low idle speeds are necessary and where restrictive exhausts require special cams that work well against wet exhaust system back pressure. These unique camshafts generate an extremely wide powerband, offering the low-end torque needed to jerk skiers up quickly and the high-end power needed for maximum performance. Also, Comp's larger camshafts are engineered for engines with less restrictive exhausts and drives that will tolerate higher idle speeds. An excellent choice for jet boats or power boats.

    Features:
  • Extremely wide powerband helps get boat on plane while making maximum horsepower
  • Work against exhaust systems with restrictive back pressure
  • Power enhancement helps maintain top end speed for long distances
  • Intended for applications where low idle speeds are required

    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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