OPGI.com works best with JavaScript enabled.

As seen on

  • Car Fix TV Logo
  • Detroit Muscle Logo

Comp Cams

Camshaft, Comp Cams Thumpr, Mutha Thumpr CL-Kit, BBC, Hyd Roller

Free Shipping!
Part# : CL16018
Mfg#: CL11-601-8
Sold As: Each
Ship Size: Standard
$1,225.99
List Price: $1,349.95
You Save $123.96

Calendar IconArriving Soon
Vehicle Specific View fitment for 4 models
Add To Wishlist 

Big Block Chevrolet 396-454 Mutha Thumpr Hydraulic roller Cam & Lifter Kit by COMP Cams®

Mutha Thumpr hydraulic roller cam-and-lifter kit keeps the matched lifter package with the selected grind

This Mutha Thumpr hydraulic roller cam & lifter kit is designed for Big Block Chevrolet 396-454. Valve lift is .558/.542 inch, advertised duration is 291/311 degrees, duration at .050-inch lift is 235/249 degrees, lobe separation is 107 degrees, and the documented operating range is 2000-5800 RPM. High-performance street/strip; rough idle. The CL-Kit includes the camshaft and matched lifters.

• Big Block Chevrolet 396-454 application • Mutha Thumpr hydraulic roller design • Valve lift: .558/.542 inch • Duration @ .050: 235/249 degrees • 107-degree lobe separation • Camshaft and matched lifters included

Notes

  • APPLICATION FOOTNOTES: [7] Stock springs cannot be used.
  • This item is not eligible for any further discounts or promotional pricing.
3
This product is not legal for street use on an emissions-controlled vehicle. It may be used on dedicated competition or pre-pollution-controlled vehicles only. Learn More
We aim to provide accurate and complete product information. If you notice anything incorrect, missing, or unclear, please let us know.
WARNING: This product can expose you to chemicals including lead, sulfur, nickel, chromium, vanadium, titanium, polyvinyl chloride, and 4,4’-methylenebis (2-chloroaniline), which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Vehicle Fitment

Year Make Model Application Details
1964–1977 Chevrolet Chevelle Big-Block Gen IV/V - hydraulic roller [7, 10, 46]
1964–1987 Chevrolet El Camino 1964–1977: Big-Block Gen IV/V - hydraulic roller [7, 10, 46]
1978–1987: CL Kit - hydraulic roller [7, 10, 46]
1978–1983 Chevrolet Malibu CL Kit - hydraulic roller [7, 10, 46]
1970–1988 Chevrolet Monte Carlo 1970–1977: Big-block Gen IV/V - hydraulic roller [7, 10, 46]
1978–1988: CL Kit - hydraulic roller [7, 10, 46]
  • Headshot of OPGI Employee
    Need help finding the right GM restoration parts? Contact a GM Parts Specialist
    Mon–Fri 8:00–4:30 PT
    Sat 10:00–3:00 PT
    GM Parts Specialist Offline
  • Price Match Guarantee Great parts. Competitive prices. Guaranteed.
  • GM Restoration Experts Since 1982 Over four decades dedicated to GM restoration
  • Original GM Is Our Standard Original GM parts and factory references guide every reproduction
  • A Deeper GM Selection Thousands of restoration, performance, and replacement parts

Customers Who Viewed This Item Also Viewed

Reviews (0)

UH OH! Product reviews didn't load.
Please reload the page, or unblock our review partner Yotpo.com.
Camshaft, Comp Cams Thumpr, Mutha Thumpr CL-Kit, BBC, Hyd Roller
Comp Cams Camshaft, Comp Cams Thumpr, Mutha Thumpr CL-Kit, BBC, Hyd Roller