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Comp Cams

Camshaft, Comp Cams Thumpr, Big Mutha Thumpr, SBC, Retro Hyd Roller

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Part# : CC26028
Mfg#: 12-602-8
Sold As: Each
Ship Size: Standard
$578.99
List Price: $637.95
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Vehicle Specific View fitment for 10 models
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Small Block Chevrolet 262-400 Big Mutha Thumpr Hydraulic roller Camshaft by COMP Cams®

Big Mutha Thumpr hydraulic roller grind targets 2500-6200 RPM with documented lift and duration specs

This Big Mutha Thumpr hydraulic roller camshaft is designed for Small Block Chevrolet 262-400. Valve lift is .531/.517 inch, advertised duration is 299/319 degrees, duration at .050-inch lift is 243/257 degrees, lobe separation is 107 degrees, and the documented operating range is 2500-6200 RPM. Street/strip; very rough idle; 9.5:1 compression and 2800+ stall recommended.

• Small Block Chevrolet 262-400 application • Big Mutha Thumpr hydraulic roller design • Valve lift: .531/.517 inch • Duration @ .050: 243/257 degrees • 107-degree lobe separation • Camshaft sold individually

Notes

  • APPLICATION FOOTNOTES: [7] Stock springs cannot be used. [10] Requires thrust button & wear plate. [46] Must use bronze tip fuel pump push rod when using high pressure or high volume pump.
  • 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 - Retro-fit hydraulic roller [7, 10, 46]
1984–1987 Buick Grand National Camshaft Only - Retro-fit hydraulic roller [7, 10, 46]
1978–1987 Buick Regal Camshaft Only - Retro-fit hydraulic roller [7, 10, 46]
1983–1986 Buick T-Type Camshaft Only - Retro-fit hydraulic roller [7, 10, 46]
1964–1977 Chevrolet Chevelle Small-Block - Retro-fit hydraulic roller [7, 10, 46]
1964–1987 Chevrolet El Camino 1964–1977: Small-Block - Retro-fit hydraulic roller [7, 10, 46]
1978–1987: Camshaft Only - Retro-fit hydraulic roller [7, 10, 46]
1978–1983 Chevrolet Malibu Camshaft Only - Retro-fit hydraulic roller [7, 10, 46]
1970–1988 Chevrolet Monte Carlo 1970–1977: Small-Block - Retro-fit hydraulic roller [7, 10, 46]
1978–1988: Camshaft Only - Retro-fit hydraulic roller [7, 10, 46]
1978–1988 Oldsmobile Cutlass Camshaft Only - Retro-fit hydraulic roller [7, 10, 46]
1982–1986 Pontiac Bonneville Camshaft Only - Retro-fit hydraulic roller [7, 10, 46]
1978–1987 Pontiac Grand Prix Camshaft Only - Retro-fit hydraulic roller [7, 10, 46]
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Camshaft, Comp Cams Thumpr, Big Mutha Thumpr, SBC, Retro Hyd Roller
Comp Cams Camshaft, Comp Cams Thumpr, Big Mutha Thumpr, SBC, Retro Hyd Roller