Xtreme Marine XM270HR Retro-Fit Hydraulic Roller Camshaft Complete Kit Lift .510"/.510" Duration 270°/276° RPM Range 1600-5400

Vehicle Info Needed

COMP CAMSPART NUMBER: 249-K11-445-8

Xtreme Marine XM270HR Retro-Fit Hydraulic Roller Camshaft Complete Kit Lift .510"/.510" Duration 270°/276° RPM Range 1600-5400

Name: Xtreme Marine XM270HR Retro-Fit Hydraulic Roller Camshaft Complete Kit Lift .510"/.510" Duration 270°/276° RPM Range 1600-5400
Brand: COMP CAMS
SKU: 249-K11-445-8
Price: 1623.95 USD
Availability: InStock

^$1,623⁹⁵

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 for inboard/outboard pleasure boats, has good 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 Height5.4

Package Width10.3

Package Length25.4

Weight30.8 PG

Part CategoryPerformance Parts

Exh. Duration @ .050 In. (Deg)224

Cam StyleHydraulic roller tappet

Grind NumberXM270HR

Exh. Duration Advertised (Deg)276

Locks IncludedYes

Engine Make/SizeChevy Big Block (396-454)

Retainers IncludedYes

Intake Valve Lift With Factory Rocker Arm Ratio (I0.51

Int. Duration @ .050 In. (Deg)218

Assembly Lubricant IncludedNo

Basic Operating Rpm Range1,600-5,400

Pushrods IncludedNo

Gaskets IncludedNo

Rocker Arms IncludedNo

Intake Valve Lift0.51 in (12.954 mm)

Computer-Controlled CompatibleNo

Int. Duration Advertised (Deg)270

Lobe Separation (Deg)112

Rpm Range1600-5400

Lifter StyleHydraulic roller

Advertised Duration270 int./278 exh.

Exhaust Valve Lift With Factory Rocker Arm Ratio (0.51

Valve Springs IncludedYes

UsageMarine

Valve Lift With Factory Rocker Arm Ratio0.510 int./0.510 exh.

QuantitySold as a kit

Valve Stem Seals IncludedYes

Exhaust Valve Lift0.51 in (12.954 mm)

Advertised Intake Duration270

Outside Diameter Of Outer Spring1.509 in (38.3 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 Duration278

Lifter TypeHydraulic Roller

Part FitmentSemi Universal

Duration At 050 Inch Lift218 int./224 exh.

Valve Springs RequiredNo

Lifters IncludedYes

Vendor Part NumberK11-445-8

Package Qty1

Package TypeEA

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