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Competition Cams

Competition Cams 42-600-11 Thumpr Retro-Fit Hydraulic Roller Camshaft

Part # COM42-600-11 Be the first to write a review

Compatible with Oldsmobile 260-455

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Competition Cams 42-600-11 Thumpr Retro-Fit Hydraulic Roller Camshaft

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Competition Cams 42-600-11 Thumpr Retro-Fit Hyd Roller Camshaft...

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)0.515
Intake Duration (at .050 inch Lift)227
Intake Valve Lift (w/ Factory Rocker Arm Ratio)0.531
Lobe Separation (degrees)107
Operating RPM Range1700-5500
Product TypeCamshafts
UPC036584312963
Manufacturer Part Number42-600-11
Part NumberCOM42-600-11
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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