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COMP Cams 12-242-2 - Comp Cams 'Xtreme Energy' Hydraulic Flat Tappet Camshafts

COMP Cams 12-242-2 - Comp Cams 'Xtreme Energy' Hydraulic Flat Tappet Camshafts
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COMP Cams#249-12-242-2

Xtreme Energy XE268H Hydraulic Flat Tappet Camshaft Only
Lift: .477''/.480''
Duration: 268°/280°
RPM Range: 1600-5800
  • Fits Applications:
  • 1977-1980
    BUICK
    1955-1986
    CHEVROLET
    1967-1986
    GMC
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COMP Cams 12-242-2 - Comp Cams 'Xtreme Energy' Hydraulic Flat Tappet Camshafts 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 12-242-2 - 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.

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 249-12-242-2

Intake Valve Lift (in.)
0.477
Exhaust Valve Lift (in.)
0.48
RPM Range
1000-7000
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
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