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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-11-252-4
Comp Cams Xtreme Marine Hydraulic Flat Tappet Camshafts
$30995
Ships on 09/09/2026
Lowest Price GuaranteeChevy Big Block 396-454ci 1965-96
- Xtreme Marine Hydraulic Flat Tappet Camshaft
- Xtreme Marine Camshaft
- 1 Year Limited Warranty
Chevelle, Camaro, Corvette, Stingray, Silverado, C10, Firebird, Chevrolet, Big Block, Chevy, BBC, 454, 427, 502, 396, Caprice, Malibu, Impala, Nova, Monte Carlo, S10, 572
Jet w/ B impeller, 10:1+ compression, river drags, bracket racing.
Chevy Big Block 396-454ci 1965-96
Lift: .575"/.578"
Duration: 298°/316°
Lobe Separation Angle: 112°
RPM Range: 3200-6800
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 Height2.9
Package Width3.1
Package Length24.6
Weight10.55 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)264
Cam StyleHydraulic flat tappet
Grind NumberCB XM 298H-12
Exh. Duration Advertised (Deg)316
Engine Make/SizeChevy Big Block (396-454)
Intake Valve Lift With Factory Rocker Arm Ratio (I0.575
Int. Duration @ .050 In. (Deg)254
Basic Operating Rpm Range3,200-6,800
Intake Valve Lift0.575 in (14.605 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)298
Lobe Separation (Deg)112
Rpm Range3200-6800
Advertised Duration298 int./316 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.578
UsageMarine
Valve Lift With Factory Rocker Arm Ratio0.575 int./0.578 exh.
Camshaft Gear Attachment3-bolt
QuantitySold individually
Exhaust Valve Lift0.578 in (14.681 mm)
Advertised Intake Duration298
Intake Duration At 050 Inch Lift254
Exhaust Duration At 050 Inch Lift264
Advertised Exhaust Duration316
Lifter TypeHydraulic Flat Tappet
Part FitmentSemi Universal
Duration At 050 Inch Lift254 int./264 exh.
Valve Springs RequiredYes
Vendor Part Number11-252-4
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
