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COMP Cams 20-601-4 Mutha' Thumpr Hydraulic Flat Camshaft 235/249 Chrysler 273-360

(Jeep Grand Cherokee 1993-98, Grand Wagoneer 1993; Dodge Durango 1998-2002, Ram 2500 1994-2002, Ram 1500 1994-2002, Dakota 1989-2002 + 134 more models)

Manufacturer

Picture for manufacturer COMP Cams

Part Number

20-601-4
5 reviews
Sale Price

$309.95

In Stock (9)

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Product Details

The COMP Cams Mutha' Thumpr camshaft is engineered for Chrysler small block 273-360 cubic inch V8 engines, delivering an aggressive idle sound and strong mid-range performance. This hydraulic flat tappet camshaft features 235° intake and 249° exhaust advertised duration, producing the signature loping idle that muscle car enthusiasts demand while maintaining excellent street manners and drivability.

Key Specifications:

  • Advertised Duration: 235° Intake / 249° Exhaust
  • Duration at .050": 207° Intake / 221° Exhaust
  • Valve Lift: .444" Intake / .465" Exhaust (with 1.5:1 rocker ratio)
  • Lobe Separation Angle: 112°
  • Camshaft Type: Hydraulic Flat Tappet
  • Application: Chrysler 273, 318, 340, 360 Small Block V8

Performance Features:

  • Aggressive idle with excellent vacuum for power accessories
  • Optimized for street performance with 9.0:1 to 10.5:1 compression
  • Power range: 1,800-5,600 RPM
  • Compatible with stock torque converters and rear gears
  • Designed for use with hydraulic flat tappet lifters

The Mutha' Thumpr series camshaft is ideal for daily drivers and weekend cruisers seeking maximum idle attitude without sacrificing reliability or street performance. Requires compatible valve springs, retainers, and lifters for proper installation. This camshaft works with factory fuel injection and emissions equipment, making it an excellent choice for modern street builds.

Products specifications

Fits

Jeep Grand Cherokee 1993-98, Grand Wagoneer 1993; Dodge Durango 1998-2002, Ram 2500 1994-2002, Ram 1500 1994-2002, Dakota 1989-2002, Charger 1966-78, Challenger 1970-74, Ram 3500 1994-2002, Dart 1964-77, 1980-82 + 130 more models

Advertised Exhaust Duration

305

Basic Operating RPM Range

2,200-6,100

Grind Number

287TH7

Cam Type

Hydraulic Flat Tappet

Engine Family

Chrysler 273-360 c.i. 8 Cylinder (1964-2002)

Exhaust Valve Lift

0.483

Intake Valve Lift

0.497

Exhaust Duration at .050 inch Lift

249

Camshaft Material

Cast Iron

Cam and Lifter Kit Upgrade

CL20-601-4

K-Kit Upgrade

K20-601-4

AMAZON ASIN

B002EDXAXA

Assembly Lubricant Included

Yes

Camshaft Gear Attachment

1-Bolt

Lifters Included

No

Valve Springs Required

Yes

Lifter Type

Hydraulic Flat Tappet

Prop 65

WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov

C.A.R.B. Exempt for Foreign Vehicles Manufactured Before 1967?

Yes, but must meet tailpipe emission standards for year of vehicle.

C.A.R.B. Exempt for On-Road Vehicles?

No

C.A.R.B. Exempt for Racing and Off-Road Only Vehicles?

Yes, but must be a race/competition only vehicle.

C.A.R.B. Exempt for California Certified Vehicles Manufactured Before 1965?

Yes, but must meet tailpipe emission standards for year of vehicle.

C.A.R.B. Exempt for Federally Certified Vehicles Manufactured Before 1967?

Yes, but must meet tailpipe emission standards for year of vehicle.

Intake Duration at .050 Inch Lift

235

LOBE SEPARATION

107

Usage

Street/Strip

Advertised Intake Duration

287

Camshaft Series

Thumpr

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The items shipped and arrived really fast. This was a great transaction even though shipping was a little high.

Wow Super fast shipping, right product, no hassle no fuss. just how i like it. good job autoplicity keep it up.

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