BBC Xtreme Marine Hyd. Roller Cam XM284HR-12

The BBC Xtreme Marine Hydraulic Roller Cam XM284HR-12 by COMP CAMS is specifically designed for big-block Chevrolet marine and high-performance street engines that require dependable valve control in both saltwater and freshwater environments. This cam profile is engineered to provide the aggressive lift and duration curve necessary to enhance power output while ensuring the durability that marine operators and performance enthusiasts demand.

The hydraulic roller camshaft design of the XM284HR-12 features precision-ground lobes and hardened steel construction, which are essential for withstanding the cyclic loading associated with aggressive valve events. This is particularly important in marinized big-block applications, where exposure to salt spray can accelerate component wear. The roller lifter design minimizes friction compared to flat-tappet designs, helping to maintain oil film strength and extend bearing life under continuous high-load conditions.

This camshaft is ideal for BBC (big-block Chevrolet) 454, 502, and 572 cubic-inch engines used in marine platforms, custom hot rods, and street machines. Its proprietary lobe geometry accounts for the unique valve train dynamics found in marine engine packages, ensuring optimal performance and reliability in real-world applications.