BBC Extreme Energy Cam XE256H-10

The BBC Extreme Energy Cam XE256H-10 from COMP CAMS is a high-performance hydraulic roller camshaft engineered for serious enthusiasts and professional engine builders who demand maximum power output and durability. This camshaft is purpose-built for street, strip, and competition applications where reliable valve lift and duration directly impact engine efficiency and performance. Whether you're building a dedicated drag platform or upgrading an existing powerplant, the XE256H-10 delivers the aggressive cam profile necessary to unlock significant horsepower gains across the RPM band.

The XE256H-10 utilizes COMP CAMS' proven extreme energy cam technology, featuring precision-ground lobes and a hydraulic roller design that minimizes friction while maximizing valve event control. The hydraulic roller lifter system allows for tighter tolerances and reduced wear compared to flat-tappet designs, ensuring consistent performance over extended use and multiple heat cycles. Weighing 10.88 lbs and manufactured to exacting standards, this camshaft provides repeatable lobe geometry and superior load-carrying capacity—critical factors in high-boost and nitrous-assisted engines where valve train stress reaches extreme levels. The robust construction resists lobe wear and maintains precise valve timing stability even under sustained high-RPM operation.

Professional engine builders and weekend racers alike rely on the XE256H-10 for naturally aspirated and forced-induction platforms requiring aggressive cam profiles. Installation requires proper valvetrain geometry assessment, pushrod length verification, and synchronized timing with compatible rocker arms and valve springs rated for extreme energy applications. The compact 24.5-inch profile allows fitment across a wide range of small-block and mid-block engine configurations, making it a versatile choice for both street performance builds and dedicated competition engines. Always verify compatibility with your specific engine platform and consult detailed cam card specifications before ordering to ensure optimal valve lift, duration, and lobe separation requirements are met.