Thumpr Hydraulic Roller Camshaft Complete Kit Lift: .557"/.542"
InfoVehicle Info Needed
COMP CAMSPART NUMBER: 249-K01-601-8

Thumpr Hydraulic Roller Camshaft Complete Kit Lift: .557"/.542"

$1,62395
ShippingShips on 10/19/2026
Lowest PriceLowest Price Guarantee

Chevy Gen VI 454 & 502 ci Big Block 1969-99
  • Mutha Thumpr
    • Thumpr Hydraulic Roller Camshaft Complete Kit
    • Lift: .557"/.542"
    • Duration: 291°/311°
    • Lobe Separation Angle: 107°
    • RPM Range: 2200-5900

    • Complete Camshaft Kit
    • 3 Grinds To Fit All Of Your Performance Needs
    • Long Exhaust Duration
    • Produces A Powerful Hard-Hitting Exhaust Note
    • Excellent Horsepower Gains And Broad Torque Curve
    • Delivers Real Seat Of The Pants Performance
    • Designed For Use w/Latest In ValveTrain Components
    • 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


      High performance street/strip, needs 9:1 compression, 2500+ stall, intake, gears and headers, 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 Length25.4
    Weight31.97 PG
    Part CategoryPerformance Parts
    Exh. Duration @ .050 In. (Deg)249
    Cam StyleHydraulic roller tappet
    Grind Number291THR7
    Exh. Duration Advertised (Deg)311
    Locks IncludedYes
    Engine Make/SizeChevy Gen VI 454
    Retainers IncludedYes
    Intake Valve Lift With Factory Rocker Arm Ratio (I0.557
    Int. Duration @ .050 In. (Deg)235
    Assembly Lubricant IncludedNo
    Basic Operating Rpm Range2,200-5,900
    Pushrods IncludedNo
    Gaskets IncludedNo
    Rocker Arms IncludedNo
    Intake Valve Lift0.557 in (14.148 mm)
    Computer-Controlled CompatibleNo
    Int. Duration Advertised (Deg)291
    Lobe Separation (Deg)107
    Rpm Range2200-5900
    Lifter StyleHydraulic roller
    Advertised Duration291 int./311 exh.
    Exhaust Valve Lift With Factory Rocker Arm Ratio (0.542
    Valve Springs IncludedYes
    UsageStreet/Performance
    Valve Lift With Factory Rocker Arm Ratio0.557 int./0.542 exh.
    QuantitySold as a kit
    Valve Stem Seals IncludedYes
    Exhaust Valve Lift0.542 in (13.767 mm)
    Advertised Intake Duration291
    Outside Diameter Of Outer Spring1.509 in (38.3 mm)
    Intake Duration At 050 Inch Lift235
    Exhaust Duration At 050 Inch Lift249
    Timing Chain StyleDouble non-roller
    Timing Chain And Gears IncludedYes
    Advertised Exhaust Duration311
    Lifter TypeHydraulic Roller
    Part FitmentSemi Universal
    Duration At 050 Inch Lift235 int./249 exh.
    Valve Springs RequiredNo
    Lifters IncludedYes
    Vendor Part NumberK01-601-8
    Package Qty1
    Package TypeEA
    No Questions
    No Reviews

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