Big Mutha Thumpr Hydraulic Roller Camshaft/Lifter/Gear Drive Small Block Chevy 1987-02 Lift: .533"/.519"
InfoVehicle Info Needed
COMP CAMSPART NUMBER: 249-GK08-602-8

Big Mutha Thumpr Hydraulic Roller Camshaft/Lifter/Gear Drive Small Block Chevy 1987-02 Lift: .533"/.519"

$1,19395
ShippingShips on 10/22/2026
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Chevy 262-400ci Small Block 1987-98 -Factory Roller Block
  • Big Mutha Thumpr
    • Big Mutha Thumpr Hydraulic Roller Camshaft/Lifter/Gear Drive
      Small Block Chevy 1987-02
    • Lift: .533"/.519"
    • Duration: 299°/319°
    • Lobe Separation Angle: 107°
    • RPM Range: 2500-6200

      Stock springs cannot be used
    • Grind Number: 299THR7
    • Camshaft/Lifter/Gear Drive Kit
    • Precision Machined
    • Heat treated Billet Steel Gears
    • 3-Way Crank Sprocket
    • 4 deg. Maximum Advance Or Retard
    • Ready To Install Kit Incl. Bolts And Lock Plates
    • Perfect Addition For Street Performance Vehicles
    • 1 Year Limited Warranty

      265, 283, 307, 302, 305, 327, 350, 383, 400, 427, L46, L48, L65, LM1, LT-1, L82, L81, LS9, L83, L98, L05, LG3, LG4, LT1, LT4, Camaro, Corvette, Chevelle, Stingray, Silverado, C10, Firebird, Chevrolet, Chevy, Small Block Chevy, Caprice, Malibu, Impala, Nova, 355, GEN1, Monte Carlo, S10


      Street/strip, needs 9.5:1 compression, 2800+ stall, intake, gears and headers, very rough 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 Height5.2
    Package Width10.3
    Package Length25.2
    Weight22.39 PG
    Part CategoryPerformance Parts
    Exh. Duration @ .050 In. (Deg)257
    Cam StyleHydraulic roller tappet
    Grind Number299THR7
    Exh. Duration Advertised (Deg)319
    Locks IncludedNo
    Engine Make/SizeChevy Small Block (262-400)
    Retainers IncludedNo
    Intake Valve Lift With Factory Rocker Arm Ratio (I0.533
    Int. Duration @ .050 In. (Deg)243
    Assembly Lubricant IncludedYes
    Basic Operating Rpm Range2,500-6,200
    Pushrods IncludedNo
    Gaskets IncludedNo
    Rocker Arms IncludedNo
    Intake Valve Lift0.533 in (13.538 mm)
    Computer-Controlled CompatibleNo
    Int. Duration Advertised (Deg)299
    Lobe Separation (Deg)107
    Rpm Range1900-5600
    Lifter StyleHydraulic roller
    Advertised Duration299 int./319 exh.
    Exhaust Valve Lift With Factory Rocker Arm Ratio (0.519
    Valve Springs IncludedNo
    UsageStreet/Strip
    Valve Lift With Factory Rocker Arm Ratio0.533 int./0.519 exh.
    Camshaft Gear Attachment3-bolt
    QuantitySold as a kit
    Valve Stem Seals IncludedNo
    Exhaust Valve Lift0.519 in (13.183 mm)
    Advertised Intake Duration299
    Intake Duration At 050 Inch Lift243
    Exhaust Duration At 050 Inch Lift257
    Timing Chain StyleGears
    Timing Chain And Gears IncludedYes
    Advertised Exhaust Duration319
    Lifter TypeHydraulic Roller Retrofit
    Duration At 050 Inch Lift243 int./257 exh.
    Valve Springs RequiredYes
    Lifters IncludedYes
    Vendor Part NumberGK08-602-8
    Package Qty1
    Package TypeEA
    No Questions
    No Reviews

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