BBC Gen VI Xtreme Hyd. Roller Cam XR276HR-10

The BBC Gen VI Xtreme Hydraulic Roller Cam XR276HR-10 by COMP CAMS represents a significant upgrade for serious big-block Chevy enthusiasts and engine builders seeking maximum performance from their Gen VI platforms. Hydraulic roller cams like this have become the industry standard for street and strip applications because they eliminate the complexity of solid roller systems while delivering reliable, repeatable power curves across wide RPM ranges. Whether you're building a high-revving street engine, a weekend warrior drag car, or a performance crate motor, this COMP CAMS offering addresses the demand for cams that balance aggressive valve timing with practical durability and adjustability.

The XR276HR-10 specification denotes a specific lift and duration profile optimized for hydraulic roller lifter compatibility, which automatically compensates for engine wear and maintains consistent preload without manual adjustment. COMP CAMS' Xtreme grind in this profile produces aggressive but controllable valve events—ideal for engines running moderate to aggressive carburetor or fuel-injection setups. The hydraulic roller design reduces parasitic losses and mechanical noise compared to solid roller alternatives, while the robust cam core material and precision lobe profiling ensure extended service life under sustained high-RPM operation. This cam integrates seamlessly with stock or aftermarket BBC Gen VI cylinder heads and compatible valvetrain components.

This cam is best suited for engine builders and mechanics installing fresh BBC Gen VI short blocks destined for street performance, bracket racing, or forced-induction applications where reliability and tuneability matter as much as power output. Proper installation requires attention to valve clearance, rocker arm geometry, and pushrods matched to your specific head configuration. Before ordering, confirm your engine's displacement, intake and exhaust port configuration, and intended RPM range, as the XR276HR-10's profile performs best in engines capable of supporting its aggressive timing events. Pair this cam with quality valvesprings, pushrods, and a compatible distributor or ignition system for optimal results.