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COMP Cams 21-600-5 Thumpr Hydraulic Flat Tappet Camshaft Chrysler - 227/241 383-440

(Chrysler 300 1959-71, Town & Country 1959-77, Newport 1959-78, New Yorker 1959-78, Imperial 1959-75, Cordoba 1975-78, Saratoga 1959-60 + 97 more models)

Part of: COMP Cams Thumpr Hydraulic Flat Tappet Camshaft Ford

Other options in this family: COMP Cams 35-600-4 COMP Cams 34-600-5 COMP Cams 20-600-4 COMP Cams 92-600-5 COMP Cams 23-600-5

Manufacturer

Picture for manufacturer COMP Cams

Part Number

21-600-5
10 reviews
Sale Price

$325.95

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The COMP Cams Thumpr 21-600-5 is a hydraulic flat tappet camshaft engineered specifically for Chrysler big block 383-440 cubic inch engines. This performance camshaft delivers the signature Thumpr sound with aggressive lope at idle while maintaining excellent street manners and drivability.

Camshaft Specifications:

  • Advertised Duration: 286°/300° (intake/exhaust)
  • Duration @ .050": 227°/241° (intake/exhaust)
  • Valve Lift (with 1.5 ratio rockers): .488"/.491" (intake/exhaust)
  • Lobe Separation Angle: 110°
  • Hydraulic flat tappet design for reliability and quiet operation
  • Recommended RPM range: 1,500-5,500 RPM
  • Ideal for street performance applications with automatic or manual transmissions

Performance Characteristics:

  • Produces the distinctive Thumpr idle sound with noticeable lope
  • Delivers strong mid-range torque and horsepower gains
  • Optimized for engines with 9.0:1 to 10.5:1 compression ratio
  • Works well with stock or mildly upgraded cylinder heads
  • Requires 2,500+ stall converter for automatic transmissions

The Thumpr series camshafts are designed for enthusiasts who want that classic muscle car sound combined with real-world performance gains. This cam requires compatible valve springs, lifters, and pushrods (sold separately). Professional installation and proper break-in procedure are recommended for optimal performance and longevity.

Products specifications

Fits

Chrysler 300 1959-71, Town & Country 1959-77, Newport 1959-78, New Yorker 1959-78, Imperial 1959-75, Cordoba 1975-78, Saratoga 1959-60, Ford 300 1959-71, Windsor 1959-61; Dodge Charger 1966-78, Challenger 1970-74, Dart 1960-69 + 92 more models

Advertised Intake Duration

279

Basic Operating RPM Range

2,000-5,800

Grind Number

279TH7

Cam Type

Hydraulic Flat Tappet

Engine Family

Chrysler 383-440 c.i. 8 Cylinder (1959-1980)

Exhaust Valve Lift

0.473

Intake Valve Lift

0.486

Exhaust Duration at .050 inch Lift

241

Camshaft Material

Cast Iron

Cam and Lifter Kit Upgrade

CL21-600-5

K-Kit Upgrade

K21-600-5

AMAZON ASIN

B0046ZL4HS

Usage

Street/Performance

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

227

Advertised Exhaust Duration

296

LOBE SEPARATION

107

Camshaft Series

Thumpr

First of all, I can not believe how fast I recieved my order, 2 DAYS! Best of all, the instructions made it easy for a non mechanic like me to install.

They were Very quick and i was very happy with the service i got!! 9-10*

Quick and low cost

Best price I could find on the web even after paying for shipping! Shipped in a couple of days and great service!

The ordering process was very simple and the prices could not be beat. The processing time to ship the order was a little longer than usual, but for the price savings, it was well worth it!

Ordered a CAI kit and Autoplicity had the lowest price. They're website didn't correctly match my vehicle to the product and it took a few days to ship. They're support was friendly and quick when I emailed them about the delay.

Great customer service, item shipped quickly. Very satisfied.

Great site. Provided needed technical specs. Shipped promptly. Although I had to ask for the tacking number, it was not emailed, one was provided promptly upon request.

I couldn't find these ARP studs anywhere else for this price! $20 less than ANYWHERE! Definitely coming back to shop at Autoplicity.

This is the easiest purchase I ever made. The visor is great and installation was a breeze. The service by Autoplicity was A-1. Shipping was better than standard. Will buy from them again.

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