Thumpr Hydraulic Flat Tappet Camshaft and Lifter Kit Lift .498"/.483" Duration 279/297 RPM Range 1800 to 5600
InfoVehicle Info Needed
COMP CAMSPART NUMBER: 249-CL11-600-4

Thumpr Hydraulic Flat Tappet Camshaft and Lifter Kit Lift .498"/.483" Duration 279/297 RPM Range 1800 to 5600

$39795
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Chevy 396-454ci Big Block 1965-96
    Thumpr Hydraulic Flat Tappet Camshaft and Lifter Kit
    Lift .498"/.483"
    Duration 279/297
    RPM Range 1800 to 5600

  • 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

    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, stock converter ok, best with 2000+ converter and gears. Choppy/thumping 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 Height3.1
Package Width5.8
Package Length25.3
Weight15.4 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)241
Cam StyleHydraulic flat tappet
Grind Number279TH7
Exh. Duration Advertised (Deg)297
Locks IncludedNo
Engine Make/SizeChevy Big Block (396-454)
Retainers IncludedNo
Intake Valve Lift With Factory Rocker Arm Ratio (I0.498
Int. Duration @ .050 In. (Deg)227
Assembly Lubricant IncludedYes
Basic Operating Rpm Range1,800-5,600
Pushrods IncludedNo
Gaskets IncludedNo
Rocker Arms IncludedNo
Intake Valve Lift0.498 in (12.649 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)279
Lobe Separation (Deg)107
Rpm Range1800-5600
Lifter StyleHydraulic flat tappet
Advertised Duration279 int./296 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.483
Valve Springs IncludedNo
UsageStreet/Performance
Valve Lift With Factory Rocker Arm Ratio0.498 int./0.483 exh.
Camshaft Gear Attachment3-bolt
QuantitySold as a kit
Valve Stem Seals IncludedNo
Exhaust Valve Lift0.483 in (12.268 mm)
Advertised Intake Duration279
Intake Duration At 050 Inch Lift227
Exhaust Duration At 050 Inch Lift241
Timing Chain And Gears IncludedNo
Advertised Exhaust Duration296
Lifter TypeHydraulic Flat Tappet
Duration At 050 Inch Lift227 int./241 exh.
Valve Springs RequiredYes
Lifters IncludedYes
Vendor Part NumberCL11-600-4
Package Qty1
Package TypeEA
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