Comp Cams  Magnum  Mechanical Flat Tappet Camshafts
Product Discontinued
COMP CAMSPART NUMBER: 249-SK11-220-4

Comp Cams Magnum Mechanical Flat Tappet Camshafts

Currently Unavailable

This product is no longer available. Please call customer service for assistance at 1-800-345-4545.

Chevy 396-454ci Big Block 1965-96
    Magnum 306S Mechanical Flat Tappet Camshaft Small Kit
    Lift: .629''/.629"
    Duration: 306°/306°
    Lobe Separation Angle: 110°
    RPM Range: 3000-7000


    *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.

    Great for Pro Street or Bracket Racing. 3500+ stall or 4-speed, 11:1 compression, 4.10 or lower gear. Radical idle.

    Operating Range:3000-7000 RPM
    Duration Advertised:306° Intake / 306° Exhaust
    Duration @ .050' Lift:260° Intake / 260° Exhaust
    Valve Lift w/1.7 Rockers:.629' Intake / .629' Exhaust
    Valve Setting:.022' Intake / .022' 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


    Jet boat with B impeller. Bracket race, 10.5:1+ compression. Use tunnel ram. Great for Pro Street or bracket racing. 3500+ stall or 4 speed. 11:1+ compression, 4.10 or lower gear. Radical idle.

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 Width10.5
Package Length26.0
Weight22.0 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)260
Cam StyleMechanical flat tappet
Grind NumberCB 306S-10
Exh. Duration Advertised (Deg)306
Locks IncludedNo
Engine Make/SizeChevy Big Block (396-454)
Retainers IncludedNo
Intake Valve Lift With Factory Rocker Arm Ratio (I0.629
Int. Duration @ .050 In. (Deg)260
Assembly Lubricant IncludedYes
Basic Operating Rpm Range3,000-7,000
Pushrods IncludedNo
Gaskets IncludedNo
Intake Valve Lash0.022 in (0.559 mm)
Rocker Arms IncludedNo
Intake Valve Lift0.629 in (15.977 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)306
Lobe Separation (Deg)110
Rpm Range3000-7000
Lifter StyleMechanical flat tappet
Advertised Duration306 int./306 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.629
Valve Springs IncludedNo
UsageStreet/Strip
Valve Lift With Factory Rocker Arm Ratio0.629 int./0.629 exh.
QuantitySold as a kit
Valve Stem Seals IncludedNo
Exhaust Valve Lash0.022 in (0.559 mm)
Exhaust Valve Lift0.629 in (15.977 mm)
Advertised Intake Duration306
Intake Duration At 050 Inch Lift260
Exhaust Duration At 050 Inch Lift260
Timing Chain StyleDouble non-roller
Timing Chain And Gears IncludedYes
Advertised Exhaust Duration306
Lifter TypeMechanical Flat Tappet
Part FitmentSemi Universal
Duration At 050 Inch Lift260 int./260 exh.
Valve Springs RequiredYes
Lifters IncludedYes
Vendor Part NumberSK11-220-4
Package Qty1
Package TypeEA
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