Comp Cams 'Xtreme Energy' Hydraulic Roller Camshafts

Vehicle Info Needed

COMP CAMSPART NUMBER: 249-K11-422-8

Comp Cams 'Xtreme Energy' Hydraulic Roller Camshafts

Name: Comp Cams 'Xtreme Energy' Hydraulic Roller Camshafts
Brand: COMP CAMS
SKU: 249-K11-422-8
Price: 1624.95 USD
Availability: InStock

^$1,624⁹⁵

Ships on 09/09/2026

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

Lift:

Duration:

Lobe Separation Angle:

RPM Range:

Produces Better Throttle Response
Produces Top Engine Horsepower
Delivers Increased Engine Vacuum
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

Performance application, great mid-range torque, likes headers.

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.

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Part TypeCamshaft Kit

BrandCOMP CAMS

Package Height5.4

Package Width10.3

Package Length25.4

Weight30.1 PG

Part CategoryPerformance Parts

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

Cam StyleHydraulic roller tappet

Grind NumberXR270HR

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)110

Rpm Range1600-5400

Lifter StyleHydraulic roller

Advertised Duration270 int./276 exh.

Exhaust Valve Lift With Factory Rocker Arm Ratio (0.51

Valve Springs IncludedYes

UsageStreet/Performance

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 Spring1.525 in (38.7 mm)

Intake Duration At 050 Inch Lift218

Exhaust Duration At 050 Inch Lift224

Timing Chain StyleDouble roller

Timing Chain And Gears IncludedYes

Advertised Exhaust Duration276

Lifter TypeHydraulic Roller

Part FitmentSemi Universal

Duration At 050 Inch Lift218 int./224 exh.

Valve Springs RequiredNo

Lifters IncludedYes

Vendor Part NumberK11-422-8

Package Qty1

Package TypeEA

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