Ford 351W Xtreme Roller Cam XR286R-10

The COMP CAMS Ford 351W Xtreme Roller Cam XR286R-10 is a mechanical roller camshaft engineered for small-block Ford engines requiring aggressive valvetrain geometry and extended rpm capability. This high-performance cam delivers 0.614-inch intake lift and 0.621-inch exhaust lift across a 286/292-degree duration window, optimized for street and strip applications where power delivery and reliability are non-negotiable.

The 110-degree lobe separation angle (LSA) combined with the mechanical roller design minimizes parasitic losses while maximizing overlap control. This camshaft is rated for operation from 3000 to 7000 rpm, making it suitable for both naturally aspirated and moderately boosted small-block Ford platforms. Mechanical roller lifters eliminate valve float in high-rpm conditions and provide precise valve event timing without the compliance drift associated with hydraulic designs. The broader duration window supports increased airflow at higher engine speeds while maintaining low-end torque characteristics essential for street-driven 351W applications.

This profile targets enthusiasts building 351W engines for performance use—from weekend track days to high-output street engines. The XR286R-10 bridges the gap between mild street cams and full-race profiles, offering power gains without requiring extensive ancillary modifications. Proper valve-to-piston clearance verification and rocker arm geometry confirmation are essential during installation. Buyers should verify compatible lifter sets and pushrods for their specific engine block and head combination before ordering.