Mutha Thumpr Retro-Fit Hydraulic Roller Camshaft Complete Kit Lift: .540"/.526"
InfoVehicle Info Needed
COMP CAMSPART NUMBER: 249-K31-601-8

Mutha Thumpr Retro-Fit Hydraulic Roller Camshaft Complete Kit Lift: .540"/.526"

$1,27595
ShippingShips on 09/14/2026
Lowest PriceLowest Price Guarantee

Ford 221-302ci 1963-1995 Non-Factory Roller Block
  • Mutha Thumpr
    • Mutha Thumpr Retro-Fit Hydraulic Roller Camshaft Complete Kit
    • Lift: .540"/.526"
    • 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

      Ford; SBF; Mustang; Windsor; Fairlane; Meteor; Mercury; GT; 22; 260; Sunbeam; Tiger; 289; 302; 351; 289; HiPo; K-Code; GT-350; Shelby; Boss; 5.0; 308; Windsor; Torino; Cougar; F-150; Squire; Thunderbird; LTD; Galaxie; Grand Marquis


      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 Height5.4
    Package Width10.5
    Package Length25.4
    Weight26.56 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/SizeFord 221-302
    Retainers IncludedYes
    Intake Valve Lift With Factory Rocker Arm Ratio (I0.54
    Int. Duration @ .050 In. (Deg)235
    Assembly Lubricant IncludedYes
    Basic Operating Rpm Range2,500-6,200
    Pushrods IncludedNo
    Gaskets IncludedNo
    Rocker Arms IncludedNo
    Intake Valve Lift0.54 in (13.716 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 (0.526
    Valve Springs IncludedYes
    UsageStreet/Strip
    Valve Lift With Factory Rocker Arm Ratio0.540 int./0.526 exh.
    QuantitySold as a kit
    Valve Stem Seals IncludedYes
    Exhaust Valve Lift0.526 in (13.36 mm)
    Advertised Intake Duration291
    Outside Diameter Of Outer Spring1.43 in (36.3 mm)
    Intake Duration At 050 Inch Lift235
    Exhaust Duration At 050 Inch Lift249
    Timing Chain StyleDouble roller
    Timing Chain And Gears IncludedYes
    Advertised Exhaust Duration311
    Lifter TypeHydraulic Roller Retrofit
    Duration At 050 Inch Lift235 int./249 exh.
    Valve Springs RequiredYes
    Lifters IncludedYes
    Vendor Part NumberK31-601-8
    Package Qty1
    Package TypeEA
    No Questions
    No Reviews

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