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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-CL11-252-4
Comp Cams Xtreme Marine Hydraulic Flat Tappet Camshafts
$39795
Ships on 10/19/2026
Lowest Price GuaranteeChevy Big Block 396-454ci 1965-96
- Xtreme Marine Hyd. Flat Tappet Cam and Lifter Kit
- 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.
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Part TypeCamshaft Kit
BrandCOMP CAMS
Package Height3.1
Package Width5.7
Package Length25.3
Weight14.95 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)264
Cam StyleHydraulic flat tappet
Grind NumberXM298H
Exh. Duration Advertised (Deg)316
Locks IncludedNo
Engine Make/SizeChevy Big Block (396-454)
Retainers IncludedNo
Intake Valve Lift With Factory Rocker Arm Ratio (I0.575
Int. Duration @ .050 In. (Deg)254
Assembly Lubricant IncludedYes
Basic Operating Rpm Range3,200-6,800
Pushrods IncludedNo
Gaskets IncludedNo
Rocker Arms IncludedNo
Intake Valve Lift0.575 in (14.605 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)298
Lobe Separation (Deg)112
Rpm Range3200-6800
Lifter StyleHydraulic flat tappet
Advertised Duration298 int./316 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.578
Valve Springs IncludedNo
UsageOEM
Valve Lift With Factory Rocker Arm Ratio0.575 int./0.578 exh.
QuantitySold as a kit
Valve Stem Seals IncludedNo
Exhaust Valve Lift0.578 in (14.681 mm)
Advertised Intake Duration298
Intake Duration At 050 Inch Lift254
Exhaust Duration At 050 Inch Lift264
Timing Chain And Gears IncludedNo
Advertised Exhaust Duration316
Lifter TypeHydraulic Flat Tappet
Part FitmentSemi Universal
Duration At 050 Inch Lift254 int./264 exh.
Valve Springs RequiredNo
Lifters IncludedYes
Vendor Part NumberCL11-252-4
Package Qty1
Package TypeEA
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