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 CL11-601-8 Mutha Thumpr 235/249 Hydraulic Roller Cam and Lifter Kit for Chevrolet Big Block 396-454

(Chevrolet Camaro 1967-72, Corvette 1967-74, Impala 1965-76, Malibu 1966-67, 1973-75, C1500 1990-93, Chevelle 1965-73, Blazer 1973-74 + 106 more models)

Manufacturer

Picture for manufacturer COMP Cams

Part Number

CL11-601-8
6 reviews
Sale Price

$1,225.95

1 left at this price

delivery box

Usually delivered within 2 days

free shipping

FREE SHIPPING

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 CL11-601-8 is a complete hydraulic roller camshaft and lifter kit designed specifically for Chevrolet Big Block engines (396-454 cubic inches). This aggressive cam profile delivers the iconic Thumpr sound with a pronounced lope at idle while providing strong mid-range to top-end power for street/strip applications.

Camshaft Specifications:

  • Advertised Duration: 235° Intake / 249° Exhaust
  • Duration at .050": 223° Intake / 237° Exhaust
  • Valve Lift: .500" Intake / .522" Exhaust (with 1.7:1 rocker ratio)
  • Lobe Separation Angle: 112°
  • Hydraulic roller design for reduced friction and improved durability
  • Produces aggressive idle with excellent throttle response

Complete Kit Includes:

  • Hydraulic roller camshaft
  • Hydraulic roller lifters (16)
  • Assembly lube for proper break-in
  • Installation instructions
  • COMP Cams decals

This cam is ideal for modified street vehicles, hot rods, and muscle cars seeking that distinctive aggressive sound with improved performance. Recommended for engines with aftermarket cylinder heads, headers, and higher stall converters. Not recommended for stock engines with restrictive exhaust systems or low compression ratios.

Products specifications

Fits

Chevrolet Camaro 1967-72, Corvette 1967-74, Impala 1965-76, Malibu 1966-67, 1973-75, C1500 1990-93, Chevelle 1965-73, Blazer 1973-74, C10 Pickup 1968-80, Caprice 1966-76, C10 1975-81, El Camino 1966-75, Monte Carlo 1970-75 + 101 more models

Advertised Exhaust Duration

311

Advertised Intake Duration

291

Basic Operating RPM Range

2,200-5,800

Intake Valve Lift

0.558

Kit Type

Cl-Kit - Cam and Lifter Kit

Exhaust Valve Lift

0.542

Exhaust Duration at .050 inch Lift

249

Camshaft Material

Austempered Ductile Iron

AMAZON ASIN

B001GEPC7U

Usage

Street/Performance

Assembly Lubricant Included

No

Valve Springs Required

Yes

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

Camshaft Gear Attachment

3-Bolt

Locks Included

No

Lifter Type

Hydraulic Roller

Intake Duration at .050 Inch Lift

235

Cam Type

Hydraulic Roller

Lifters Included

Yes

Retainers Included

No

Timing Chain and Gears Included

No

LOBE SEPARATION

107

Valve Stem Seals Included

No

Camshaft Series

Thumpr

Engine Family

Chevrolet 396-454 c.i. 8 Cylinder (1967-1996)

Great pricing on hard to find products. Fast processing and shipping.

Purchase process an amount of time from purchase, an product being shipped is short an sweet!

Great prices and FAST shipping!! Definitely will buy products here again!

Lowest price on the Internet. Fast shipping.

Easy to order

Great price and quick shipping!

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