My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

COMP Cams CL21-601-5 Mutha' Thumpr Hydraulic Flat Cam and Lifter Kit for Chrysler 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)

Manufacturer

Picture for manufacturer COMP Cams

Part Number

CL21-601-5
7 reviews
Sale Price

$449.95

Estimated ship date Saturday, November 21

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The COMP Cams Mutha' Thumpr CL21-601-5 is a complete camshaft and lifter kit engineered specifically for Chrysler 383-440 big block engines. This aggressive hydraulic flat tappet camshaft delivers a signature "thumper" idle with exceptional throttle response and strong mid-range torque, making it ideal for street performance builds seeking that distinctive muscle car sound and feel.

Camshaft Specifications:

  • Advertised Duration: 235° Intake / 249° Exhaust
  • Hydraulic flat tappet design for reliable street performance
  • Aggressive lope idle with excellent vacuum characteristics
  • Optimized for engines with stock to mildly modified components
  • Recommended RPM range: 1,600-5,400

Complete Kit Includes:

  • Mutha' Thumpr camshaft
  • Assembly lube for proper break-in
  • Installation instructions
  • COMP Cams decals

This kit is designed for street machines where a powerful idle tone and strong acceleration are desired. The Mutha' Thumpr series is known for delivering maximum attitude with drivability, providing noticeably improved performance over stock camshafts while maintaining street-friendly characteristics. Compatible with factory torque converters and rear gear ratios, though performance is enhanced with mild upgrades.

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 Exhaust Duration

304

Basic Operating RPM Range

2,200-6,100

Cam Type

Hydraulic Flat Tappet

Engine Family

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

Kit Type

Cl-Kit - Cam and Lifter Kit

Exhaust Valve Lift

0.483

Intake Valve Lift

0.497

Exhaust Duration at .050 inch Lift

249

Camshaft Material

Cast Iron

K-Kit Upgrade

K21-601-5

AMAZON ASIN

B005H89Q9Q

Usage

Street/Performance

Assembly Lubricant Included

Yes

Camshaft Gear Attachment

1-Bolt

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.

Gaskets Included

No

Locks Included

No

Intake Duration at .050 Inch Lift

235

Lifters Included

Yes

Retainers Included

No

Timing Chain and Gears Included

No

LOBE SEPARATION

107

Advertised Intake Duration

287

Valve Stem Seals Included

No

Camshaft Series

Thumpr

Good parts and easy to order. Best price. Anytime again

Awesome! Shopping was great but it took days of searching to find the part I needed, your site didn't pop up.

Fitment, shown, and match, with picture match to my needs.

easy checkout with Amazon.

Great pricing and quick shipping. I'll be using them again for sure.

delivery was on time and quick, ordering was simple product looks as it should be,great.

Great prices. Saved about $50. Arrived in just a few days.<br>Will be ordering again soon

Share icon
Return Policy
Returns are easy at Autoplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy