Comp Cams 'Xtreme Energy' Hydraulic Roller Camshafts

Vehicle Info Needed

COMP CAMSPART NUMBER: 249-K01-425-8

Comp Cams 'Xtreme Energy' Hydraulic Roller Camshafts

Name: Comp Cams 'Xtreme Energy' Hydraulic Roller Camshafts
Brand: COMP CAMS
SKU: 249-K01-425-8
Price: 1729.95 USD
Availability: InStock

^$1,729⁹⁵

Ships on 10/19/2026

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Chevrolet Gen VI Big Block 454ci & 502 c.i. 8 CYL. 1996-1999

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

Good for Pro Street and bracket racing. Needs 10.5:1+compression, 3500+ stall, very good intake, headers with low gears.

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 Height5.0

Package Width10.5

Package Length36.0

Weight32.0 PG

Part CategoryPerformance Parts

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

Cam StyleHydraulic roller tappet

Grind NumberG6 XR300HR-10

Exh. Duration Advertised (Deg)306

Locks IncludedYes

Engine Make/SizeChevy Gen VI 454

Retainers IncludedYes

Intake Valve Lift With Factory Rocker Arm Ratio (I0.56

Int. Duration @ .050 In. (Deg)248

Assembly Lubricant IncludedNo

Basic Operating Rpm Range3,200-6,200

Pushrods IncludedNo

Gaskets IncludedNo

Rocker Arms IncludedNo

Intake Valve Lift0.56 in (14.224 mm)

Computer-Controlled CompatibleNo

Int. Duration Advertised (Deg)300

Lobe Separation (Deg)110

Rpm Range3000-6400

Lifter StyleHydraulic roller

Advertised Duration300 int./306 exh.

Exhaust Valve Lift With Factory Rocker Arm Ratio (0.58

Valve Springs IncludedYes

UsageStreet/Performance

Valve Lift With Factory Rocker Arm Ratio0.560 int./0.580 exh.

QuantitySold as a kit

Valve Stem Seals IncludedYes

Exhaust Valve Lift0.58 in (14.732 mm)

Advertised Intake Duration300

Outside Diameter Of Outer Spring1.437 in (36.5 mm)

Intake Duration At 050 Inch Lift248

Exhaust Duration At 050 Inch Lift254

Timing Chain StyleDouble roller

Timing Chain And Gears IncludedYes

Advertised Exhaust Duration306

Lifter TypeHydraulic Roller

Part FitmentSemi Universal

Duration At 050 Inch Lift248 int./254 exh.

Valve Springs RequiredNo

Lifters IncludedYes

Vendor Part NumberK01-425-8

Package Qty1

Package TypeEA

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