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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-11-242-3
Xtreme Energy 268H Hydraulic Flat Tappet Camshaft Only Lift: .515" /.520" Duration: 268°/280° RPM Range: 1600-5800
$29795
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Lowest Price GuaranteeChevy 396-454ci Big Block 1965-96
- Xtreme Energy 268H Hydraulic Flat Tappet Camshaft Only
Lift: .515''/.520''
Duration: 268°/280°
RPM Range: 1600-5800
*Note: In order to use these camshafts in 1965-66 396/427ci blocks, it is necessary to machine a 3/16' wide x 7/64' deep groove in the rear main journal of the cam to allow oil flow to the top of the engine.
Good for street machines, slightly rough idle, stock converter.
| Operating Range: | 1600-5800 RPM |
| Duration Advertised: | 268° Intake / 280° Exhaust |
| Duration @ .050' Lift: | 224° Intake / 230° Exhaust |
| Valve Lift w/1.7 Rockers: | .515' Intake / .520' Exhaust |
| Lobe Separation Angle: | 110° |
Chevelle, Camaro, Corvette, Stingray, Silverado, C10, Firebird, Chevrolet, Big Block, Chevy, BBC, 454, 427, 502, 396, Caprice, Malibu, Impala, Nova, Monte Carlo, S10, 572
Good for street machines, slightly rough idle, stock converter will work but best with 1800+ stall.
Emissions Note:
This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.
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Part TypeCamshaft
BrandCOMP CAMS
Package Height3.0
Package Width3.0
Package Length24.0
Weight10.87 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)230
Cam StyleHydraulic flat tappet
Grind NumberCB XE268H-10
Exh. Duration Advertised (Deg)280
Engine Make/SizeChevy Big Block (396-454)
Intake Valve Lift With Factory Rocker Arm Ratio (I0.515
Int. Duration @ .050 In. (Deg)224
Basic Operating Rpm Range1,600-5,800
Intake Valve Lift0.515 in (13.081 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)268
Lobe Separation (Deg)110
Rpm Range1600-5800
Advertised Duration268 int./280 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.52
UsageStreet/Performance
Valve Lift With Factory Rocker Arm Ratio0.515 int./0.520 exh.
QuantitySold individually
Exhaust Valve Lift0.52 in (13.208 mm)
Advertised Intake Duration268
Intake Duration At 050 Inch Lift224
Exhaust Duration At 050 Inch Lift230
Advertised Exhaust Duration280
Lifter TypeHydraulic Flat Tappet
Duration At 050 Inch Lift224 int./230 exh.
Valve Springs RequiredYes
Vendor Part Number11-242-3
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
