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Camshaft, Comp Cams Xtreme Energy, XR288HR, Pontiac V8, Hyd Roller
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Designed for 1955-81 Pontiac 265-455 V8, this COMP Cams® Xtreme Energy XR288HR hydraulic roller camshaft uses .520/.540-inch valve lift, 288/294° advertised duration, 236/242° duration at .050 inch and a 110° lobe-separation angle. Its 2200-6000 RPM range is suited to rough-idle street performance; 9.5:1 compression, lower gears and 2800+ stall recommended.
• 1955-81 Pontiac 265-455 V8 application • Xtreme Energy XR288HR grind • Hydraulic Roller cam design • Valve lift: .520/.540 inch • Duration @ .050: 236/242° • Sold individually
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