BBC Xtreme Marine Hyd. Cam XM262H-12

The BBC Xtreme Marine Hyd. Cam XM262H-12 by COMP CAMS is a purpose-built hydraulic roller camshaft engineered for Big Block Chevrolet engines operating in high-performance marine and automotive applications. Designed for builders seeking reliable valve lift and duration without the complexity of mechanical roller conversion, this cam delivers aggressive valve timing characteristics suitable for engines demanding consistent performance in saltwater or freshwater marine environments. The hydraulic design eliminates the need for costly roller lifter conversions while maintaining modern efficiency standards.

This BBC hydraulic cam features XM262H specifications that balance valve lift, duration, and lobe separation angle to maximize airflow without sacrificing low-end torque—critical for marine propulsion systems where mid-range power delivery directly impacts acceleration and load-carrying capacity. The XM262H-12 designation indicates a 12-degree lobe separation angle, a proven geometry that enhances both intake and exhaust scavenging while remaining compatible with stock or lightly modified cylinder heads. COMP CAMS' proprietary lobe profiling and surface treatments ensure durability against the corrosive environments and continuous-duty cycles typical of marine engines.

Ideal for boaters, marine mechanics, and engine builders restoring or upgrading BBC-powered vessels, this cam installs directly into compatible Big Block Chevrolet platforms (427, 454, 496, and similar displacements) using standard hydraulic roller or flat-tappet lifter configurations depending on block preparation. Marine-specific applications benefit from the XM262H's proven track record in brackish water and coastal environments where corrosion resistance and mechanical reliability are non-negotiable. Installation requires proper pushrod length verification and valve train clearance checks; consultation with a qualified marine engine builder is recommended to ensure optimal performance and longevity.