Olds Xtreme Energy Hyd. Roller Cam - XR276HR-10

The Olds Xtreme Energy Hyd. Roller Cam XR276HR-10 from COMP CAMS is a hydraulic roller camshaft designed specifically for Oldsmobile engines seeking reliable mid-range performance and improved fuel economy. This cam is engineered for street and light performance applications where smooth operation and mechanical stability matter as much as power gains. Hydraulic roller cams eliminate the complexity of solid lifter setups while maintaining the efficiency advantages of roller technology, making this an ideal choice for enthusiasts building dependable daily-driver or weekend-warrior platforms.

Hydraulic roller cam design uses self-adjusting lifters to maintain zero lash across varying temperatures and engine speeds, eliminating the need for manual valve lash adjustment and reducing valve train noise. The roller follower design dramatically reduces friction compared to flat-tappet cams, translating to lower parasitic losses and improved throttle response. COMP CAMS' XR276HR-10 specification delivers a conservative lift curve optimized for stock-class cylinder heads and intake manifolds, providing predictable power delivery across the RPM band without requiring extensive engine modifications or supporting modifications to fuel delivery and ignition systems.

This camshaft is best suited for Oldsmobile engine builders working within OEM-style performance parameters or those transitioning from worn factory cams to a more aggressive profile without a complete top-end overhaul. Installation requires standard cam timing procedures and compatibility with hydraulic roller lifters; most stock or mild performance cylinder head packages will accept this cam without clearance issues. The XR276HR-10 pairs well with original equipment or high-flow intake manifolds and works effectively across standard to mildly modified fuel systems, making it a practical choice for restorations, reliability upgrades, or measured performance builds where durability and drivability take priority.