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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-11-676-4
Xtreme Energy Mechanical Flat Camshaft Lift: .553"/.568"
$30995
Ships on Sep 14, 2026
Lowest Price GuaranteeChevy Big Block 396-454ci 1965-96
- Xtreme Energy Mechanical Flat Camshaft
- Lift: .553"/.568"
- Duration: 268°/274°
- Lobe Separation Angle: 110°
- RPM Range 1600-6000
Solid-Great for street machines, largest cam for stock converterChevelle, Camaro, Corvette, Stingray, Silverado, C10, Firebird, Chevrolet, Big Block, Chevy, BBC, 454, 427, 502, 396, Caprice, Malibu, Impala, Nova, Monte Carlo, S10, 572
Great for street machines, largest cam for stock converter.
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.
CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART
Part TypeCamshaft
BrandCOMP CAMS
Package Height2.8
Package Width3.0
Package Length24.2
Weight10.4 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)236
Cam StyleMechanical flat tappet
Grind NumberCB XS268S-10
Exh. Duration Advertised (Deg)274
Engine Make/SizeChevy Big Block (396-454)
Intake Valve Lift With Factory Rocker Arm Ratio (I0.553
Int. Duration @ .050 In. (Deg)230
Basic Operating Rpm Range1,600-6,000
Intake Valve Lash0.016 in (0.406 mm)
Intake Valve Lift0.553 in (14.046 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)268
Lobe Separation (Deg)110
Rpm Range1600-6000
Advertised Duration268 int./274 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.568
UsageStreet/Performance
Valve Lift With Factory Rocker Arm Ratio0.553 int./0.568 exh.
QuantitySold individually
Exhaust Valve Lash0.019 in (0.483 mm)
Exhaust Valve Lift0.568 in (14.427 mm)
Advertised Intake Duration268
Intake Duration At 050 Inch Lift230
Exhaust Duration At 050 Inch Lift236
Advertised Exhaust Duration274
Lifter TypeMechanical Flat Tappet
Part FitmentSemi Universal
Duration At 050 Inch Lift230 int./236 exh.
Valve Springs RequiredYes
Vendor Part Number11-676-4
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
