Xtreme Energy Mechanical Flat Camshaft Complete Kit Lift: .553"/.568"

Vehicle Info Needed

COMP CAMSPART NUMBER: 249-K11-676-4

Xtreme Energy Mechanical Flat Camshaft Complete Kit Lift: .553"/.568"

Name: Xtreme Energy Mechanical Flat Camshaft Complete Kit Lift: .553"/.568"
Brand: COMP CAMS
SKU: 249-K11-676-4
Price: 742.95 USD
Availability: InStock

^$742⁹⁵

Ships on 10/20/2026

Lowest Price Guarantee

Chevy Big Block 396-454ci 1965-96

Lift: .553"/.568"
Duration: 268°/274°
Lobe Separation Angle: 110°
RPM Range 1600-6000
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

Great for street machines, largest cam for stock converter.

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 Width10.5

Package Length25.2

Weight26.3 PG

Part CategoryPerformance Parts

Exh. Duration @ .050 In. (Deg)236

Cam StyleMechanical flat tappet

Grind NumberCB XS268S-10

Exh. Duration Advertised (Deg)274

Locks IncludedYes

Engine Make/SizeChevy Big Block (396-454)

Retainers IncludedYes

Intake Valve Lift With Factory Rocker Arm Ratio (I0.553

Int. Duration @ .050 In. (Deg)230

Assembly Lubricant IncludedYes

Basic Operating Rpm Range1,600-6,000

Pushrods IncludedNo

Gaskets IncludedNo

Intake Valve Lash0.016 in (0.406 mm)

Rocker Arms IncludedNo

Intake Valve Lift0.553 in (14.046 mm)

Computer-Controlled CompatibleNo

Int. Duration Advertised (Deg)268

Lobe Separation (Deg)110

Rpm Range1600-6000

Lifter StyleMechanical flat tappet

Advertised Duration268 int./274 exh.

Exhaust Valve Lift With Factory Rocker Arm Ratio (0.568

Valve Springs IncludedYes

UsageStreet/Performance

Valve Lift With Factory Rocker Arm Ratio0.553 int./0.568 exh.

QuantitySold as a kit

Valve Stem Seals IncludedYes

Exhaust Valve Lash0.019 in (0.483 mm)

Exhaust Valve Lift0.568 in (14.427 mm)

Advertised Intake Duration268

Outside Diameter Of Outer Spring1.509 in (38.3 mm)

Intake Duration At 050 Inch Lift230

Exhaust Duration At 050 Inch Lift236

Timing Chain StyleDouble non-roller

Timing Chain And Gears IncludedYes

Advertised Exhaust Duration274

Lifter TypeMechanical Flat Tappet

Part FitmentSemi Universal

Duration At 050 Inch Lift230 int./236 exh.

Valve Springs RequiredNo

Lifters IncludedYes

Vendor Part NumberK11-676-4

Package Qty1

Package TypeEA

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