Comp Cams  Xtreme Marine  Hydraulic Flat Tappet Camshafts
InfoVehicle Info Needed
COMP CAMSPART NUMBER: 249-K12-236-3

Comp Cams Xtreme Marine Hydraulic Flat Tappet Camshafts

$64395
ShippingShips on 10/19/2026
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: .462"/.477"
    Duration: 262°/268°
    Lobe Separation Angle: 112°
    RPM Range: 1300-5500

    *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.

    Biggest cam for inboard/outboard, good mid-range with excellent response, noticeable idle.

    Operating Range:1300-5500 RPM
    Duration Advertised:262° Intake / 268° Exhaust
    Duration @ .050' Lift:218° Intake / 224° Exhaust
    Valve Lift w/1.5 Rockers:.462' Intake / .477' 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


    Biggest cam for inboard/outboard, good mid-range with excellent 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 Height5.3
Package Width10.5
Package Length25.4
Weight22.09 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)224
Cam StyleHydraulic flat tappet
Grind NumberCS XM 262H-12
Exh. Duration Advertised (Deg)266
Locks IncludedYes
Engine Make/SizeChevy Small Block (262-400)
Retainers IncludedYes
Intake Valve Lift With Factory Rocker Arm Ratio (I0.462
Int. Duration @ .050 In. (Deg)218
Assembly Lubricant IncludedYes
Basic Operating Rpm Range1,300-5,500
Pushrods IncludedNo
Gaskets IncludedNo
Rocker Arms IncludedNo
Intake Valve Lift0.462 in (11.735 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)262
Lobe Separation (Deg)112
Rpm Range1300-5500
Lifter StyleHydraulic flat tappet
Advertised Duration262 int./268 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.477
Valve Springs IncludedYes
UsageMarine
Valve Lift With Factory Rocker Arm Ratio0.462 int./0.477 exh.
QuantitySold as a kit
Valve Stem Seals IncludedYes
Exhaust Valve Lift0.477 in (12.116 mm)
Advertised Intake Duration262
Outside Diameter Of Outer Spring1.254 in (31.9 mm)
Intake Duration At 050 Inch Lift218
Exhaust Duration At 050 Inch Lift224
Timing Chain StyleDouble non-roller
Timing Chain And Gears IncludedYes
Advertised Exhaust Duration268
Lifter TypeHydraulic Flat Tappet
Part FitmentSemi Universal
Duration At 050 Inch Lift218 int./224 exh.
Valve Springs RequiredNo
Lifters IncludedYes
Vendor Part NumberK12-236-3
Package Qty1
Package TypeEA
No Questions
No Reviews

Items You Need

Universal Camshaft Installation/Removal Tool Includes 4 camshaft adapters

JEGS

Universal Camshaft Installation/Removal Tool Includes 4 camshaft adapters

Part Number : 555-80599
$4779$51.99
You Save$4.20
Valve Spring Compressor [Stud Mount]

JEGS

Valve Spring Compressor [Stud Mount]

Part Number : 555-80518
$919$9.99
You Save$0.80
159 Engine Break-In Oil Additive [12-Ounce]

COMP CAMS

159 Engine Break-In Oil Additive [12-Ounce]

Part Number : 249-159
$2395
Engine Assembly Lube [4 oz. Bottle]

JEGS

Engine Assembly Lube [4 oz. Bottle]

Part Number : 555-28000
$589$6.99
You Save$1.10
Valvetrain Checking Springs Light tension springs

JEGS

Valvetrain Checking Springs Light tension springs

Part Number : 555-80523
$839$8.99
You Save$0.60
Valve Spring Compressor [Stud Mount]

JEGS

Valve Spring Compressor [Stud Mount]

Part Number : 555-80521
$5299$57.19
You Save$4.20
Precision Cam Degree Wheel Kit [11 in.]

JEGS

Precision Cam Degree Wheel Kit [11 in.]

Part Number : 555-81621
$14699$161.99
You Save$15.00
Break-In/Engine Oil Supplement [12 oz. Bottle]

JEGS

Break-In/Engine Oil Supplement [12 oz. Bottle]

Part Number : 555-28060
$1009$11.99
You Save$1.90
Some parts are not legal for use in California or other states with similar laws / regulations
p65 warning
Your Cart

Your shopping cart is empty!