SBC Magnum Hyd. Roller Cam 286HR

The SBC Magnum Hydraulic Roller Cam 286HR from COMP CAMS is purpose-built for small-block Chevrolet engines demanding serious valve-train performance without the complexity of solid roller maintenance. This camshaft is engineered for builders and enthusiasts who want aggressive lift and duration specs paired with the reliability and adjustability of a hydraulic roller design. Whether you're building a street machine, weekend warrior, or performance truck, the 286HR delivers the aggressive valve events needed for mid-range torque and top-end power while keeping valve lash adjustment simple and forgiving.

The hydraulic roller design uses pressurized oil to automatically maintain zero lash, eliminating the need for manual adjustment and reducing valve-train wear compared to mechanical or solid roller alternatives. The roller lifters ride on hardened steel lobes, reducing friction and extending component life under sustained high-RPM operation. This 286-degree duration profile is ground for strong mid-range punch and peak power, making it ideal for engines running in the 2,000–6,500 RPM sweet spot. The precision-ground lobes and hardened steel construction ensure consistent performance across thousands of heat cycles, critical for reliability in modified engines running pump gas or mild nitrous oxide.

This camshaft is compatible with all hydraulic roller small-block Chevrolet engines, including Gen I and Gen II blocks with matching roller lifter packages. Installation requires a quality hydraulic roller valve-train setup—pushrods, rocker arms, and lifters must be matched to the cam profile for correct geometry and durability. Pair the 286HR with an aftermarket intake manifold, carb or fuel injection, and a performance ignition for maximum results; stock induction systems will limit potential. Valve spring pressure and rocker arm ratio should be verified with COMP CAMS' specifications to ensure proper lobe contact and prevent float at peak RPM.