Comp Cams  Xtreme Marine  Hydraulic Flat Tappet Camshafts
InfoVehicle Info Needed
COMP CAMSPART NUMBER: 249-K12-240-4

Comp Cams Xtreme Marine Hydraulic Flat Tappet Camshafts

$65595
ShippingShips on 10/20/2026
Lowest PriceLowest Price Guarantee

Chevy Small Block 262-400ci 1955-98
    Xtreme Marine Hyd. Flat Tappet Cam Complete Kit
    Chevy Small Block 262-400ci 1955-98
    Lift: .480"/.489"
    Duration: 270°/286°
    Lobe Separation Angle: 112°
    RPM Range: 1600-5800

    *Note: In order to use these camshafts in 1955-57 265ci blocks, it is necessary to machine a small groove in the rear main journal of the cam to allow oil flow to the top of the engine.

    Jet boat with 'A' impeller, strong mid-range, good throttle response, noticeable idle.

    Operating Range:1600-5800 RPM
    Duration Advertised:270° Intake / 286° Exhaust
    Duration @ .050' Lift:226° Intake / 236° Exhaust
    Valve Lift w/1.5 Rockers:.480' Intake / .489' Exhaust
    Lobe Separation Angle:112°

    265, 283, 307, 302, 305, 327, 350, 383, 400, 427, L46, L48, L65, LM1, LT-1, L82, L81, LS9, L83, L98, L05, LG3, LG4, LT1, LT4, Camaro, Corvette, Chevelle, Stingray, Silverado, C10, Firebird, Chevrolet, Chevy, Small Block Chevy, Caprice, Malibu, Impala, Nova, 355, GEN1, Monte Carlo, S10


    Jet boat with A impeller, strong mid-range, good throttle response, noticeable idle.

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 Kit
BrandCOMP CAMS
Package Height5.0
Package Width10.5
Package Length26.0
Weight25.0 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)236
Cam StyleHydraulic flat tappet
Grind NumberXM270H
Exh. Duration Advertised (Deg)286
Locks IncludedYes
Engine Make/SizeChevy Small Block (262-400)
Retainers IncludedYes
Intake Valve Lift With Factory Rocker Arm Ratio (I0.48
Int. Duration @ .050 In. (Deg)226
Assembly Lubricant IncludedYes
Basic Operating Rpm Range1,600-5,800
Pushrods IncludedNo
Gaskets IncludedNo
Rocker Arms IncludedNo
Intake Valve Lift0.48 in (12.192 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)271
Lobe Separation (Deg)112
Rpm Range1600-5800
Lifter StyleHydraulic flat tappet
Advertised Duration270 int./286 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.489
Valve Springs IncludedYes
UsageMarine
Valve Lift With Factory Rocker Arm Ratio0.480 int./0.489 exh.
QuantitySold as a kit
Valve Stem Seals IncludedYes
Exhaust Valve Lift0.489 in (12.421 mm)
Advertised Intake Duration270
Outside Diameter Of Outer Spring1.254 in (31.9 mm)
Intake Duration At 050 Inch Lift226
Exhaust Duration At 050 Inch Lift236
Timing Chain StyleDouble non-roller
Timing Chain And Gears IncludedYes
Advertised Exhaust Duration286
Lifter TypeHydraulic Flat Tappet
Part FitmentSemi Universal
Duration At 050 Inch Lift226 int./236 exh.
Valve Springs RequiredNo
Lifters IncludedYes
Vendor Part NumberK12-240-4
Package Qty1
Package TypeEA
No Questions
No Reviews

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