Comp Cams  Xtreme Marine  Hydraulic Flat Tappet Camshafts
InfoVehicle Info Needed
COMP CAMSPART NUMBER: 249-11-240-20

Comp Cams Xtreme Marine Hydraulic Flat Tappet Camshafts

$42295
ShippingShips on 10/19/2026
Lowest PriceLowest Price Guarantee

Chevy Big Block 396-454ci 1965-96
    Xtreme Marine Hyd. Flat Tappet Cam
    Chevy Big Block 396-454ci 1965-96
    Pro-Plasma Nitrided
    Lift: .564"/.566"
    Duration: 278°/292°
    Lobe Separation Angle: 112°
    RPM Range: 2000-6200

    COMP Cams® is the only aftermarket valve train company in America that provides a Pro Plasma™ Nitriding Service in-house. Nitriding is a process by which nitrogen is introduced into iron or steel, causing a material's surface hardness to be increased for improved initial and long-term wear characteristics. It is recognized by metallurgists worldwide as the best way to increase the hardness and lubricity of flat tappet cams toenhance break-in and durability. Nitriding is available for any COMP Cams® flat tappet camshaft, but many popular flat tappet camshafts have already undergone the Pro Plasma™ Nitriding treatment and are on the shelf, ready to be shipped. Don't get blinded by shiny surface finishing or heat-treating - nitriding has been race-proven around the world and documented to deliver superior results.

    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/ A impeller, needs improved intake, likes headers. Nitrided.

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 Height2.75
Package Width3.0
Package Length24.5
Weight10.36 PG
Part CategoryPerformance Parts
UsageMarine
Intake Valve Lift0.564 in (14.326 mm)
Int. Duration Advertised (Deg)278
Exh. Duration @ .050 In. (Deg)244
Rpm Range2000-6200
Lifter TypeHydraulic Flat Tappet
Exh. Duration Advertised (Deg)292
Part FitmentSemi Universal
Engine Make/SizeChevy Big Block (396-454)
Int. Duration @ .050 In. (Deg)234
Exhaust Valve Lift0.566 in (14.376 mm)
Vendor Part Number11-240-20
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
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