Xtreme Energy Mechanical Roller Camshaft Small Kit Big Block Chevy 1965-96 Lift: .660"/.666"
InfoVehicle Info Needed
COMP CAMSPART NUMBER: 249-SK11-773-8

Xtreme Energy Mechanical Roller Camshaft Small Kit Big Block Chevy 1965-96 Lift: .660"/.666"

$1,30995
ShippingShips on 10/22/2026
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Chevy 396-454ci Big Block 1965-96
    Xtreme Energy Mechanical Roller Camshaft Small Kit
    Big Block Chevy 1965-96
  • Lift: .660"/.666"
  • Duration: 292°/298°
  • Lobe Separation Angle: 110°
  • RPM Range: 3200-7200

    *Note: In order to use these camshafts in 1965-66 396/427ci blocks, it is necessary to machine a 3/16' wide x 7/64' deep groove in the rear main journal of the cam to allow oil flow to the top of the engine.

    ** Note: Requires thrust button & wear plate.

    Best for Pro Street. Needs good intake and exhaust, 11:1 compression or more and 3500 stall converter.

    Operating Range:3200-7200 RPM
    Duration Advertised:292° Intake / 298° Exhaust
    Duration @ .050' Lift:254° Intake / 260° Exhaust
    Valve Lift w/1.7 Rockers:.660' Intake / .666' Exhaust
    Valve Setting:.016' Intake / .018' Exhaust
    Lobe Separation Angle:110°

    Chevelle, Camaro, Corvette, Stingray, Silverado, C10, Firebird, Chevrolet, Big Block, Chevy, BBC, 454, 427, 502, 396, Caprice, Malibu, Impala, Nova, Monte Carlo, S10, 572


    Best for Pro Street. Needs good intake and exhaust, 11:1+ compression and 3500+ stall.

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 Height5.0
Package Width10.25
Package Length25.5
Weight15.0 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)260
Cam StyleMechanical roller tappet
Grind NumberXR292R
Exh. Duration Advertised (Deg)298
Locks IncludedNo
Engine Make/SizeChevy Big Block (396-454)
Retainers IncludedNo
Intake Valve Lift With Factory Rocker Arm Ratio (I0.66
Int. Duration @ .050 In. (Deg)254
Assembly Lubricant IncludedNo
Basic Operating Rpm Range3,200-7,200
Pushrods IncludedNo
Gaskets IncludedNo
Intake Valve Lash0.016 in (0.406 mm)
Rocker Arms IncludedNo
Intake Valve Lift0.66 in (16.764 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)292
Lobe Separation (Deg)110
Rpm Range3200-7200
Lifter StyleMechanical roller
Advertised Duration292 int./298 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.666
Valve Springs IncludedNo
UsageStreet/Performance
Valve Lift With Factory Rocker Arm Ratio0.660 int./0.666 exh.
QuantitySold as a kit
Valve Stem Seals IncludedNo
Exhaust Valve Lash0.018 in (0.457 mm)
Exhaust Valve Lift0.666 in (16.916 mm)
Advertised Intake Duration292
Intake Duration At 050 Inch Lift254
Exhaust Duration At 050 Inch Lift260
Timing Chain StyleDouble roller
Timing Chain And Gears IncludedYes
Advertised Exhaust Duration298
Lifter TypeHydraulic Roller
Part FitmentSemi Universal
Duration At 050 Inch Lift254 int./260 exh.
Valve Springs RequiredYes
Lifters IncludedYes
Vendor Part NumberSK11-773-8
Package Qty1
Package TypeEA
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