Mutha Thumpr Hydraulic Flat Tappet Camshaft and Lifter Kit Single-Bolt Lift .497"/.483" Duration 287/304 RPM Range 2200-6100
InfoVehicle Info Needed
COMP CAMSPART NUMBER: 249-CL21-601-5

Mutha Thumpr Hydraulic Flat Tappet Camshaft and Lifter Kit Single-Bolt Lift .497"/.483" Duration 287/304 RPM Range 2200-6100

$44995
ShippingShips on Oct 28, 2026
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Chrysler 383-440 C.I. 8 CYL. 1959-1980
    Mutha Thumpr Hydraulic Flat Tappet Camshaft and Lifter Kit
    Single-Bolt
    Lift .497"/.483"
    Duration 287/304
    RPM Range 2200-6100

  • Camshaft And Lifter 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

    273, 360, 318, AMC, Dodge, Mopar, Plymouth, Dart, Road Runner, Charger, Challenger, 383, 400, 440, 426, HEMI, 426 Wedge, 426 HEMI, RB, B, HEMI, 392, Chrysler, LA


    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 Height3.0
Package Width5.5
Package Length26.0
Weight13.3 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)249
Cam StyleHydraulic flat tappet
Grind Number287TH7
Exh. Duration Advertised (Deg)304
Locks IncludedNo
Engine Make/SizeMopar 383-440
Retainers IncludedNo
Intake Valve Lift With Factory Rocker Arm Ratio (I0.497
Int. Duration @ .050 In. (Deg)235
Assembly Lubricant IncludedYes
Basic Operating Rpm Range2,200-6,100
Pushrods IncludedNo
Gaskets IncludedNo
Rocker Arms IncludedNo
Intake Valve Lift0.497 in (12.624 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)287
Lobe Separation (Deg)107
Rpm Range2200-6100
Lifter StyleHydraulic flat tappet
Advertised Duration287 int./304 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.483
Valve Springs IncludedNo
UsageStreet/Hi-Performance
Valve Lift With Factory Rocker Arm Ratio0.497 int./0.483 exh.
QuantitySold as a kit
Valve Stem Seals IncludedNo
Exhaust Valve Lift0.483 in (12.268 mm)
Advertised Intake Duration287
Intake Duration At 050 Inch Lift235
Exhaust Duration At 050 Inch Lift249
Timing Chain And Gears IncludedNo
Advertised Exhaust Duration304
Lifter TypeHydraulic Flat Tappet
Duration At 050 Inch Lift235 int./249 exh.
Valve Springs RequiredYes
Lifters IncludedYes
Vendor Part NumberCL21-601-5
Package Qty1
Package TypeEA
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