Xtreme Marine XM308HR Retro-Fit Hydraulic Roller Camshaft Complete Kit Lift .575"/.575" Duration 308°/314° RPM Range 3500-6500

Vehicle Info Needed

COMP CAMSPART NUMBER: 249-K11-461-8

Xtreme Marine XM308HR Retro-Fit Hydraulic Roller Camshaft Complete Kit Lift .575"/.575" Duration 308°/314° RPM Range 3500-6500

Name: Xtreme Marine XM308HR Retro-Fit Hydraulic Roller Camshaft Complete Kit Lift .575"/.575" Duration 308°/314° RPM Range 3500-6500
Brand: COMP CAMS
SKU: 249-K11-461-8
Price: 1728.95 USD
Availability: InStock

^$1,728⁹⁵

Ships on 10/23/2026

Lowest Price Guarantee

Chevrolet 396-454 c.i. 8 CYL. 1965-1996

Retro-Fit

Lift

Duration

RPM Range

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

Good in jet boat with B impeller with 10:1+ compression, running river drags or bracket racing.

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

Weight31.65 PG

Part CategoryPerformance Parts

Exh. Duration @ .050 In. (Deg)260

Cam StyleHydraulic roller tappet

Grind NumberXM308HR

Exh. Duration Advertised (Deg)314

Locks IncludedYes

Engine Make/SizeChevy Big Block (396-454)

Retainers IncludedYes

Intake Valve Lift With Factory Rocker Arm Ratio (I0.575

Int. Duration @ .050 In. (Deg)254

Assembly Lubricant IncludedNo

Basic Operating Rpm Range3,500-6,500

Pushrods IncludedNo

Gaskets IncludedNo

Rocker Arms IncludedNo

Intake Valve Lift0.575 in (14.605 mm)

Computer-Controlled CompatibleNo

Int. Duration Advertised (Deg)308

Lobe Separation (Deg)112

Rpm Range3500-6500

Lifter StyleHydraulic roller

Advertised Duration308 int./314 exh.

Exhaust Valve Lift With Factory Rocker Arm Ratio (0.575

Valve Springs IncludedYes

UsageMarine

Valve Lift With Factory Rocker Arm Ratio0.575 int./0.575 exh.

QuantitySold as a kit

Valve Stem Seals IncludedYes

Exhaust Valve Lift0.575 in (14.605 mm)

Advertised Intake Duration308

Outside Diameter Of Outer Spring1.55 in (39.4 mm)

Intake Duration At 050 Inch Lift254

Exhaust Duration At 050 Inch Lift260

Timing Chain StyleDouble roller

Timing Chain And Gears IncludedYes

Advertised Exhaust Duration314

Lifter TypeHydraulic Roller

Part FitmentSemi Universal

Duration At 050 Inch Lift254 int./260 exh.

Valve Springs RequiredNo

Lifters IncludedYes

Vendor Part NumberK11-461-8

Package Qty1

Package TypeEA

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