Olds Xtreme Energy Hyd. Roller Cam - XR262HR

The COMP CAMS Xtreme Energy Hydraulic Roller Camshaft XR262HR is a purpose-built roller cam engineered for Oldsmobile V8 engines demanding increased power and broader RPM range. This hydraulic roller cam delivers 0.505 inches of lift on both intake and exhaust sides, with duration specs of 262 degrees intake and 268 degrees exhaust, maintaining a 110-degree lobe separation angle. Designed to operate efficiently between 1000 and 5000 RPM, this camshaft bridges aggressive idle characteristics with usable street and moderate performance applications.

Hydraulic roller technology eliminates the maintenance burden of solid lifter systems while preserving the flow efficiency gains of roller design. The 0.505-inch lift specification maximizes valve opening area without requiring extensive cylinder head porting or valvetrain geometry changes, translating to measurable airflow improvements across the mid to upper RPM band. The 110-degree lobe separation angle preserves idle vacuum for power steering and brake booster function while supporting the extended exhaust duration—262/268 asymmetry is the signature of a cam profile optimized for both scavenging and cylinder filling. This cam operates reliably in stock hydraulic lifter housings, eliminating the need for solid lifter conversion kits, pushrods, or rocker arm modifications.

This camshaft targets Oldsmobile V8 engine builders and restorationists seeking a measurable power increase without full engine disassembly or exotic fuel requirements. Applications range from weekend cruisers to road course drivers running vintage muscle platforms. The 5000 RPM upper limit suits carbureted or early fuel-injection Olds platforms where mechanical reliability and drivability matter as much as peak output. Installation requires standard camshaft removal and bearing inspection; the roller design runs cooler than flat-tappet alternatives and tolerates less-than-perfect oil delivery.

COMP CAMS Xtreme Energy series camshafts are recognized in the Oldsmobile performance community for conservative valve timing that respects stock fuel systems and emissions plumbing while delivering genuine volumetric efficiency gains. This XR262HR profile sits at the threshold between mild street cams and high-overlap competition designs—buyers should pair it with compatible intake and exhaust manifolds to realize the full potential of the extended exhaust duration.