OPGI.com works best with JavaScript enabled.
1‑800‑243‑8355

As seen on

  • Rust Valley Restorers Logo
  • All Girls Garage Logo

Comp Cams

Camshaft, Comp Cams Thumpr, Big Mutha Thumpr, SBC, Hyd Flat

Free Shipping!
Part# : CC26024
Mfg#: 12-602-4
Sold As: Each
Ship Size: Standard
$309.99
List Price: $341.95
You Save $31.96
Calendar IconArriving Soon
Vehicle Specific View fitment for 10 models
Add To Wishlist 

Small Block Chevrolet 262-400 Big Mutha Thumpr Hydraulic flat-tappet Camshaft by COMP Cams®

Big Mutha Thumpr hydraulic flat-tappet grind targets 2500-6400 RPM with documented cam specs

This Big Mutha Thumpr hydraulic flat-tappet camshaft is designed for Small Block Chevrolet 262-400. Valve lift is .500/.486 inch, advertised duration is 295/313 degrees, duration at .050-inch lift is 243/257 degrees, lobe separation is 107 degrees, and the documented operating range is 2500-6400 RPM. Street/strip; very rough idle; 9.5:1 compression and 2800+ stall recommended.

• Small Block Chevrolet 262-400 application • Big Mutha Thumpr hydraulic flat-tappet design • Valve lift: .500/.486 inch • Duration @ .050: 243/257 degrees • 107-degree lobe separation • Camshaft sold individually

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
1982 Buick Grand National Camshaft Only - hydraulic flat tappet
1984–1987 Buick Grand National Camshaft Only - hydraulic flat tappet
1978–1987 Buick Regal Camshaft Only - hydraulic flat tappet
1983–1986 Buick T-Type Camshaft Only - hydraulic flat tappet
1964–1977 Chevrolet Chevelle Small-Block - hydraulic flat tappet
1964–1987 Chevrolet El Camino 1964–1977: Small-Block - hydraulic flat tappet
1978–1987: Camshaft Only - hydraulic flat tappet
1978–1983 Chevrolet Malibu Camshaft Only - hydraulic flat tappet
1970–1988 Chevrolet Monte Carlo 1970–1977: Small-Block - hydraulic flat tappet
1978–1988: Camshaft Only - hydraulic flat tappet
1978–1988 Oldsmobile Cutlass Camshaft Only - hydraulic flat tappet
1982–1986 Pontiac Bonneville Camshaft Only - hydraulic flat tappet
1978–1987 Pontiac Grand Prix Camshaft Only - hydraulic flat tappet
  • Headshot of OPGI Employee
    Need help finding the right GM restoration parts? Contact a GM Parts Specialist
    Chat Unknown Status Call Toll-Free
    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, Big Mutha Thumpr, SBC, Hyd Flat
Comp Cams Camshaft, Comp Cams Thumpr, Big Mutha Thumpr, SBC, Hyd Flat