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Competition Cams

Competition Cams 11-771-8 Xtreme Energy Solid Roller Cam XR280 R-10

Part # COM11-771-8 Be the first to write a review

Xtreme Energy 242/248 Solid Roller Cam Compatible with Chevrolet Big Block 396-454

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Competition Cams 11-771-8 Xtreme Energy Solid Roller Cam XR280 R-10

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  • Xtreme Energy Mechanical Roller Camshaft
  • Fit 396-454 cu.in big block Chervolet V8s
  • RPM Range: 2,500 to 6,500
  • Duration @ .050" lift: 242/248 (int/exh)
  • Best in street machines with 2800 stall converter, 10:1 or more compression with 3.73-3.90 rear gears.

Features:

  • Quicker opening lobe profiles deliver increased responsiveness & more area under the lift curve
  • More vacuum allows a step up in duration for greater performance
  • Best seller; excellent all around performance in street carbureted applications
  • Work best with COMP Cams® roller rockers and matched valve springs
  • Require other performance parts (intake manifold, headers, etc.) for best performance
Advertised Exhaust Duration286
Advertised Intake Duration280
Brand Competition Cams
Camshaft StyleSolid/Mechanical Roller
Emission Code4
Exhaust Duration (at .050 inch Lift)248
Exhaust Valve Lift(w/ Factory Rocker Arm Ratio)0.653
Intake Duration (at .050 inch Lift)242
Intake Valve Lift (w/ Factory Rocker Arm Ratio)0.646
Lobe Separation (degrees)110
Operating RPM Range2500-6500
Product TypeCamshafts
UPC036584058946
Manufacturer Part Number11-771-8
Part NumberCOM11-771-8
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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