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COMP Cams CL12-242-2 - Comp Cams 'Xtreme Energy' Hydraulic Flat Tappet Camshafts



COMP Cams CL12-242-2 - Comp Cams 'Xtreme Energy' Hydraulic Flat Tappet Camshafts
COMP Cams CL12-242-2 - Comp Cams 'Xtreme Energy' Hydraulic Flat Tappet Camshafts

JEGS Part Number: 249-CL12-242-2

Xtreme Energy 268H Hydraulic Flat Tappet Camshaft & Lifter Kit
Lift: .477''/.480''
Duration: 268°/280°
RPM Range: 1600-5800
  • Fits Applications:
  • 1977-1980
    BUICK
    1955-1986
    CHEVROLET
    1967-1988
    GMC
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COMP Cams CL12-242-2 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.

Great for street machines, largest cam for stock converter.

Operating Range:1600-5800 RPM
Duration Advertised:268° Intake / 280° Exhaust
Duration @ .050'' Lift:224° Intake / 230° Exhaust
Valve Lift w/1.5 Rockers:.477'' Intake / .480'' Exhaust
Lobe Separation Angle:110°

Comp Cams 'Xtreme Energy' Hydraulic Flat Tappet Camshafts

The Leading Edge of Valve Train Technology

Comp Cams Xtreme Energy series are perfect for 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 and greatest in valvetrain technology . 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 springs 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 CL12-242-2

    Intake Valve Lift (in.)
    0.477
    Exhaust Valve Lift (in.)
    0.48
    RPM Range
    1600-5800
    Int. Duration @ .050 in. (Deg)
    224
    Exh. Duration @ .050 in. (Deg)
    230
    Int. Duration Advertised (Deg)
    268
    Exh. Duration Advertised (Deg)
    280
    Engine Make/Size
    Chevy Small Block (262-400)
    Lifter Type
    Hydraulic Flat Tappet
    Usage
    Street/Performance
    Gaskets Included
    No
    Advertised Duration
    268 int./280 exh.
    Advertised Exhaust Duration
    280
    Advertised Intake Duration
    268
    Assembly Lubricant Included
    Yes
    Basic Operating RPM Range
    1,600-5,800
    Cam Style
    Hydraulic flat 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 (
    0.48
    Grind Number
    CS XE268H-10
    Intake Duration at 050 inch Lift
    224
    Intake Valve Lift with Factory Rocker Arm Ratio (i
    0.477
    Lifter Style
    Hydraulic flat tappet
    Lifters Included
    Yes
    Locks Included
    No
    Pushrods Included
    No
    Quantity
    Sold as a kit
    Retainers Included
    No
    Rocker Arms Included
    No
    Timing Chain and Gears Included
    No
    Valve Lift with Factory Rocker Arm Ratio
    0.477 int./0.480 exh.
    Valve Springs Included
    No
    Valve Springs Required
    Yes
    Valve Stem Seals Included
    No
    Lobe Separation (Deg)
    110
    Manufacturer's Part Number:
    CL12-242-2
    Rated 4 out of 5 by from Just what I wanted. The cam kit is just what I wanted, not real radical but a noticeable HP gain and a great sound. The only problem I had with the kit was, there was no cam lube enclosed as advertised.
    Date published: 2014-11-02
    Rated 5 out of 5 by from comp cams I haven't had a chance to install this on yet,but I have purchased many in the past and I have confidence that this one will be perfect like the others
    Date published: 2016-02-20
    • 2016-04-30T09:48CST
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