Xtreme Energy Hyd. Cam - 426 Hemi XR286HR-10

The Xtreme Energy Hyd. Cam - 426 Hemi XR286HR-10 by COMP CAMS is purpose-built for serious big-block Mopar builders seeking reliable, repeatable performance without the complexity of solid-roller or shaft-driven designs. Hydraulic roller camshafts like this one have become the industry standard for street and strip 426 Hemi engines because they deliver aggressive lift and duration while maintaining valve train stability and durability at elevated RPM. This cam is engineered for enthusiasts who demand maximum power gains without sacrificing drivability or requiring extensive head work.

The XR286HR-10 profile delivers substantial valve lift and duration that optimizes flow through the 426 Hemi's legendary big-valve cylinder heads, creating a broader powerband across the RPM range. COMP CAMS' hydraulic roller design uses precision-ground lobes and hardened steel construction to eliminate wear while maintaining consistent lobe geometry under sustained high-load operation. The hydraulic lifter interface self-adjusts for valve lash, reducing noise and maintenance requirements compared to mechanical roller designs—a critical advantage for street-driven builds where reliability matters as much as horsepower.

This cam excels in 426 Hemi engines destined for both street performance and bracket racing applications, particularly in vehicles where consistent valve train geometry and reduced mechanical noise justify the hydraulic roller investment. Installation requires proper timing set and verification with a quality degree wheel to ensure optimal power delivery; matching this cam with quality pushrods, rocker arms, and a tuned intake manifold will unlock its full potential. Builders upgrading from stock or mild hydraulic flat-tappet cams will immediately notice stronger mid-range torque and top-end responsiveness, making this an ideal choice for restomod projects and modern performance builds alike.