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Factory Muscle Mechanical Flat Tappet Camshaft Big Block Chevy 396-454ci 1965-96 Lift: .520"/.520"
InfoVehicle Info Needed
COMP CAMSPART NUMBER: 249-11-106-3

Factory Muscle Mechanical Flat Tappet Camshaft Big Block Chevy 396-454ci 1965-96 Lift: .520"/.520"

$29795
3 left in stock
ShippingShips on Nov 02, 2026
Lowest PriceLowest Price Guarantee

Big Block Chevy 396-454ci 1965-96
  • Solid Lifter
      • Factory Muscle Mechanical Flat Tappet Camshaft
      Big Block Chevy 396-454ci 1965-96
    • Lift: .520"/.520"
    • Duration: 242°/242°
    • Lobe Separation Angle: 114°
    • RPM Range: 2200-6200

    • Replacement For Factory I.D. #3863143
    • 396 1967 Z28 375 HP
    • 402 1970 375 HP
    • 427 1967-1969 427/435 HP
    • 454 1970 LS6 450/465 HP
    • 454 1971 LS6 425 HP

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


      Factory I.D. 3863143 for: 396c.i., 1967-69 Z28, factory 375 HP; 402c.i., 1970, factory 375 HP; 427c.i., 1967-69, factory 425/435 HP; 454c.i., 1970 LS6, factory 450/465 HP; 454c.i., 1971 LS6, factory 425 HP

    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

    Get the benefit of modern technology in a camshaft for your restored muscle car or factory high performance vehicle and retain that great original sound. Comp Cams grinds these cams using factory specs, to keep the performance of your car just as it was back then. Camshaft & Lifter Kits are indicated by a CL in their part number and include Camshaft, Lifters, Assembly Lube, Decals, and Instructions.

    Features:

    • Reproduction of factory original muscle car camshaft
    • Maintain efficiency and drivability of engines
    • New computer controlled aided design avoids previous factory design compromises
    • Tailored to work with the high compression engine of the 1960s and 70s to produce rough idle
    Part TypeCamshaft
    Product LineComp Cams Factory Muscle Car Camshafts
    BrandCOMP CAMS
    Package Height3.0
    Package Width3.0
    Package Length24.5
    Weight11.2 PG
    Part CategoryPerformance Parts
    Exh. Duration @ .050 In. (Deg)242
    Cam StyleMechanical flat tappet
    Grind Number143S
    Exh. Duration Advertised (Deg)302
    Engine Make/SizeChevy Big Block (396-454)
    Intake Valve Lift With Factory Rocker Arm Ratio (I0.52
    Int. Duration @ .050 In. (Deg)242
    Basic Operating Rpm Range2,200-6,200
    Intake Valve Lash0.024 in (0.61 mm)
    Intake Valve Lift0.52 in (13.208 mm)
    Computer-Controlled CompatibleNo
    Int. Duration Advertised (Deg)316
    Lobe Separation (Deg)114
    Rpm Range2200-6200
    Advertised Duration316 int./302 exh.
    Exhaust Valve Lift With Factory Rocker Arm Ratio (0.52
    UsageOEM
    Valve Lift With Factory Rocker Arm Ratio0.520 int./0.520 exh.
    QuantitySold individually
    Exhaust Valve Lash0.028 in (0.711 mm)
    Exhaust Valve Lift0.52 in (13.208 mm)
    Advertised Intake Duration316
    Intake Duration At 050 Inch Lift242
    Exhaust Duration At 050 Inch Lift242
    Advertised Exhaust Duration302
    Lifter TypeHydraulic Flat Tappet
    Part FitmentSemi Universal
    Duration At 050 Inch Lift242 int./242 exh.
    Valve Springs RequiredYes
    Vendor Part Number11-106-3
    Package Qty1
    Package TypeEA

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    Some parts are not legal for use in California or other states with similar laws / regulations
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