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COMP Cams 12-243-3 - Comp Cams 'Xtreme 4x4' Hydraulic Flat Tappet Camshafts



COMP Cams 12-243-3 - Comp Cams 'Xtreme 4x4' Hydraulic Flat Tappet Camshafts
COMP Cams 12-243-3 - Comp Cams 'Xtreme 4x4' Hydraulic Flat Tappet Camshafts
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JEGS Part Number: 249-12-243-3

Xtreme 4x4 X4270H Hydraulic Flat Tappet Camshaft
Lift: .480''/.498''
Duration: 270°/278°
Lobe Separation Angle: 111°
RPM Range: 1800-6000

COMP Cams 12-243-3 Details

Chevy 262-400ci Small Block 1955-98

*Note: In order to use these camshafts in 1955-57 265ci blocks, it is necessary to machine a small groove in the rear main journal of the cam to allow oil flow to the top of the engine.

Strong mid-range and throttle response, likes headers, gears, 2200+ stall converter.

Operating Range:1800-6000 RPM
Duration Advertised:270° Intake / 278° Exhaust
Duration @ .050'' Lift:226° Intake / 234° Exhaust
Valve Lift w/1.5 Rockers:.480'' Intake / .498'' Exhaust
Lobe Separation Angle:111°

Comp Cams 'Xtreme 4x4' Hydraulic Flat Tappet Camshafts

Big Torque Cams!

Four wheel drive engines have special needs and requirements that most street performance camshaft just can't properly statisfy. Comp Cams Xtreme 4x4 camshafts produce tremendous off-idle torque and throttle response as well as big torque throughout the entire operating range without sacrificing necessary vacuum. We do not recommend the use of stock valve train components with these camshafts due to the aggressive lobe designs.

Features:
  • Improved throttle response and increased low & mid-range RPM horsepower for towing and off-road
  • Designed for use with common restrictive factory exhaust systems, including OEM exhaust manifolds

    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.

  • Items similar to COMP Cams 12-243-3

    COMP Cams 12-243-3

    Intake Valve Lift (in.)
    0.480
    Exhaust Valve Lift (in.)
    0.498
    RPM Range
    1800-6000
    Int. Duration @ .050 in. (Deg)
    226
    Exh. Duration @ .050 in. (Deg)
    234
    Int. Duration Advertised (Deg)
    270
    Exh. Duration Advertised (Deg)
    278
    Engine Make/Size
    Chevy Small Block (262-400)
    Lifter Type
    Hydraulic Flat Tappet
    Usage
    Street/Performance
    Advertised Duration
    270 int./278 exh.
    Advertised Exhaust Duration
    278
    Advertised Intake Duration
    270
    Basic Operating RPM Range
    1,800-6,000
    Cam Style
    Hydraulic flat tappet
    Computer-Controlled Compatible
    No
    Duration at 050 inch Lift
    226 int./234 exh.
    Exhaust Duration at 050 inch Lift
    234
    Exhaust Valve Lift with Factory Rocker Arm Ratio (
    0.498
    Grind Number
    CS X4 270H-11
    Intake Duration at 050 inch Lift
    226
    Intake Valve Lift with Factory Rocker Arm Ratio (i
    0.48
    Quantity
    Sold individually
    Valve Lift with Factory Rocker Arm Ratio
    0.480 int./0.498 exh.
    Valve Springs Required
    Yes
    Lobe Separation (Deg)
    111
    Manufacturer's Part Number:
    12-243-3
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