Big Mutha" Thumpr Hydraulic Flat Tappet Camshaft Complete Kit Lift .507"/.494" Duration 295/312 RPM Range 2500-6400
InfoVehicle Info Needed
COMP CAMSPART NUMBER: 249-K20-602-4

Big Mutha" Thumpr Hydraulic Flat Tappet Camshaft Complete Kit Lift .507"/.494" Duration 295/312 RPM Range 2500-6400

$72995
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Chrysler 273-360 C.I. 8 CYL. 1964-2000
    Big Mutha' Thumpr Hydraulic Flat Tappet Camshaft Complete Kit
    Lift .507"/.494"
    Duration 295/312
    RPM Range 2500-6400

  • Complete 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


    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

Thumpr Camshafts are the hottest cams to hit the streets in more than a decade. That's because they give you the big cam sound you're looking for, without the drawbacks. Applying a camshaft design originally created for sports car endurance racing, they incorporate early exhaust valve opening, long exhaust duration, and a generous amount of intake and exhaust overlap. Best of all, Thumprs will not negatively impact power output or streetability.

Show More Features:
  • Three unique cam designs for each application that deliver excellent horsepower gains and broad torque curve; perfect choice for muscle cars and street rods
  • Early intake valve opening and long exhaust duration create optimum overlap for powerful, hard-hitting exhaust note
  • Best with aftermarket converters and more rear gear

    Thumpr Sound ClipClick to Listen

    Camshaft & Lifter Kits are indicated by a CL in their part number and include Camshaft, Lifters, Assembly Lube, Decals, and Instructions.

    Complete Kits are indicated by a K in their part number and include Camshaft, Lifters, Timing Chain & Gears, Valve Springs, Retainers, Locks, Assembly Lube, Decals, and Instructions.

The Comp Cams Thumpr Hydraulic Flat Tappet Cams are the perfect solution for muscle car enthusiasts and performance builders seeking that aggressive "thumpy" idle and increased engine power. Engineered to deliver impressive performance without sacrificing drivability, these camshafts are designed for vehicles that demand high-performance upgrades. Whether you're building a street rod, classic muscle car, or high-performance engine, the Thumpr camshaft is the ideal choice for anyone looking to take their ride to the next level.

The Big Mutha Thumpr cam kit is tailored for those looking for a more aggressive, lopey idle while boosting horsepower and torque. These camshafts are specifically designed to provide maximum power and enhanced throttle response, particularly at mid-range RPMs, making them a top choice for street performance builds.

The performance camshaft offers an ideal balance between street-friendly drivability and high-performance capability. With a unique lobe design, the Thumpr camshaft provides an unmistakable sound while increasing airflow and valve timing for more robust power delivery. These camshafts are perfect for enthusiasts who want to enhance both the sound and performance of their engine.

If you're seeking a camshaft that makes your engine roar with authority while delivering tangible performance gains, look no further than the Comp Cams Thumpr Hydraulic Flat Tappet Cams. Upgrade your engine today and experience the difference in power, performance, and sound!

Part TypeCamshaft Kit
Product LineComp Cams Thumpr Hydraulic Flat Tappet Cams
BrandCOMP CAMS
Package Height5.2
Package Width10.3
Package Length25.4
Weight23.95 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)257
Cam StyleHydraulic flat tappet
Grind Number295TH7
Exh. Duration Advertised (Deg)313
Locks IncludedYes
Engine Make/SizeMopar 273-360
Retainers IncludedYes
Intake Valve Lift With Factory Rocker Arm Ratio (I0.507
Int. Duration @ .050 In. (Deg)243
Assembly Lubricant IncludedYes
Basic Operating Rpm Range2,500-6,400
Pushrods IncludedNo
Gaskets IncludedNo
Rocker Arms IncludedNo
Intake Valve Lift0.507 in (12.878 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)295
Lobe Separation (Deg)107
Rpm Range2500-6400
Lifter StyleHydraulic flat tappet
Advertised Duration295 int./312 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.494
Valve Springs IncludedYes
UsageStreet/Strip
Valve Lift With Factory Rocker Arm Ratio0.507 int./0.494 exh.
QuantitySold as a kit
Valve Stem Seals IncludedYes
Exhaust Valve Lift0.494 in (12.548 mm)
Advertised Intake Duration295
Intake Duration At 050 Inch Lift243
Exhaust Duration At 050 Inch Lift257
Timing Chain StyleDouble roller
Timing Chain And Gears IncludedYes
Advertised Exhaust Duration312
Lifter TypeHydraulic Flat Tappet
Duration At 050 Inch Lift243 int./257 exh.
Valve Springs RequiredNo
Lifters IncludedYes
Vendor Part NumberK20-602-4
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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