SBF 351W Xtreme Hyd. Roller Cam XR270RF-HR

The SBF 351W Xtreme Hyd. Roller Cam XR270RF-HR from COMP CAMS is a purpose-built hydraulic roller camshaft engineered for small block Ford 351W engines seeking aggressive street and strip performance. This camshaft delivers the valve event timing and lift characteristics needed to maximize power output across a broad RPM band, making it ideal for enthusiasts upgrading stock camshafts or building high-output naturally aspirated engines. Hydraulic roller technology eliminates the wear associated with flat tappets while offering cost-effective durability compared to solid roller designs.

This camshaft features a 270-degree intake duration and 276-degree exhaust duration with 0.513-inch lift on both intake and exhaust valves, paired with a 110-degree lobe separation angle (LSA). The LSA of 110 degrees is a moderate overlap specification that balances street drivability with responsive power delivery. Rated for operation from 1,500 to 5,500 RPM, the XR270RF-HR is optimized for engines with moderate compression ratios and street-oriented induction systems. The hydraulic roller design automatically adjusts valve clearance through hydraulic actuation, eliminating the need for manual lash adjustment and reducing maintenance while improving reliability under varying load conditions.

This camshaft is purpose-designed for 351W small block Ford applications and requires compatible roller hydraulic lifters and a roller timing set for proper installation. Builders working on street cars, weekend track vehicles, or mid-range performance builds will find the Xtreme Hyd. Roller Cam XR270RF-HR delivers solid gains in torque and horsepower without requiring extensive engine modifications or high-octane fuel. Installation demands proper valve train geometry verification and professional machine work; consultation with a qualified engine builder is recommended to ensure correct timing chain alignment and lifter preload for optimal cam profile execution.