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Competition Cams

Competition Cams K11-601-8 Mutha Thumpr Cam & Kit - CB 291T HR-7

Part # COMK11-601-8 Be the first to write a review

Compatible with Chevrolet Big Block 396-454

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Competition Cams K11-601-8 Mutha Thumpr Cam & Kit - CB 291T HR-7

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Thumpr Hydraulic roller camshaft and kit; Duration @ .050" lift: 235/249 (int/exh); For high performance street/strip use

Features:

  • Complete Kit Includes : Camshaft , Lifters, Valve Springs, Retainers, Valve Locks / Stem Seals, Timing Chain Set, Assembly Lube, Decals, and Instructions
  • Great sound (early exhaust opening and more overlap)
  • Great power (new lobe designs give great area and air flow)
  • Great mid-range response (early intake closing traps more air)
  • Minimal engine vacuum - requires mods for any vacuum accessories such as power brakes
  • Designed for use only with valve train upgrades including COMP Cams® Beehive™ Valve Springs and roller rockers
  • Works best with looser converters, more rear end gear and other performance engine modifications
Advertised Exhaust Duration311
Advertised Intake Duration291
Brand Competition Cams
Camshaft StyleHydraulic Roller
Emission Code4
Exhaust Duration (at .050 inch Lift)249
Exhaust Valve Lift(w/ Factory Rocker Arm Ratio)0.542
Intake Duration (at .050 inch Lift)235
Intake Valve Lift (w/ Factory Rocker Arm Ratio)0.558
Lobe Separation (degrees)107
Operating RPM Range2000-5800
Product TypeCamshaft Kits
UPC036584153504
Manufacturer Part NumberK11-601-8
Part NumberCOMK11-601-8
4

This part is legal for sale or use on Racing Use Only Vehicles

The following vehicles are considered Racing Use Only Vehicles:

  • Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street.

WARNING: It is against the law to install this part on an Emissions Controlled Vehicle

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