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Competition Cams

Competition Cams 11-600-8 Thumpr Camshaft

Part # COM11-600-8 Be the first to write a review

Thumpr 227/241 Hydraulic Roller Cam Compatible with Chevrolet Big Block 396-454

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Competition Cams 11-600-8 Thumpr Camshaft

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Thumpr Camshaft; Retro-Fit Hydraulic Roller; 1900-5500 rpm; Adv. Dur. 283 Int./303 Exh.; Lift .547 Int/.530 Exh.; Lobe Angle 107 deg.;

Features:

  • 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 Duration303
Advertised Intake Duration283
Brand Competition Cams
Camshaft StyleHydraulic Roller
Emission Code4
Exhaust Duration (at .050 inch Lift)241
Exhaust Valve Lift(w/ Factory Rocker Arm Ratio)0.53
Intake Duration (at .050 inch Lift)227
Intake Valve Lift (w/ Factory Rocker Arm Ratio)0.547
Lobe Separation (degrees)107
Operating RPM Range1900-5500
Product TypeCamshafts
UPC036584150893
Manufacturer Part Number11-600-8
Part NumberCOM11-600-8
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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