Comp Cams 'Xtreme Energy' Hydraulic Roller Camshafts

Vehicle Info Needed

COMP CAMSPART NUMBER: 249-K11-407-8

Comp Cams 'Xtreme Energy' Hydraulic Roller Camshafts

Name: Comp Cams 'Xtreme Energy' Hydraulic Roller Camshafts
Brand: COMP CAMS
SKU: 249-K11-407-8
Price: 1567.95 USD
Availability: InStock

^$1,567⁹⁵

Ships on 09/10/2026

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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

Excellent mileage, smooth idle, strong torque through RPM range.

Part TypeCamshaft Kit

BrandCOMP CAMS

Package Height5.5

Package Width10.5

Package Length25.1

Weight30.2 PG

Part CategoryPerformance Parts

Exh. Duration @ .050 In. (Deg)206

Cam StyleHydraulic roller tappet

Grind NumberXR252HR

Exh. Duration Advertised (Deg)258

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)200

Assembly Lubricant IncludedNo

Basic Operating Rpm Range600-4,600

Pushrods IncludedNo

Gaskets IncludedNo

Rocker Arms IncludedNo

Intake Valve Lift0.51 in (12.954 mm)

Computer-Controlled CompatibleNo

Int. Duration Advertised (Deg)252

Lobe Separation (Deg)110

Rpm Range600-4600

Lifter StyleHydraulic roller

Advertised Duration252 int./258 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 Duration252

Outside Diameter Of Outer Spring1.525 in (38.7 mm)

Intake Duration At 050 Inch Lift200

Exhaust Duration At 050 Inch Lift206

Timing Chain StyleDouble roller

Timing Chain And Gears IncludedYes

Advertised Exhaust Duration258

Lifter TypeHydraulic Roller

Duration At 050 Inch Lift200 int./206 exh.

Valve Springs RequiredNo

Lifters IncludedYes

Vendor Part NumberK11-407-8

Package Qty1

Package TypeEA

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