SBC Extreme Energy Cam XE284H-10

The COMP Cams SBC Extreme Energy Cam XE284H-10 is a hydraulic flat tappet camshaft engineered for small block Chevrolet engines seeking reliable mid-range torque and broad RPM flexibility. This camshaft combines a 284-degree intake duration with a 296-degree exhaust duration and a 110-degree lobe separation angle, delivering intake and exhaust valve lifts of 0.507 and 0.510 inches respectively. The design targets the 2300 to 6500 RPM operating range, making it suitable for street-performance builds where usable power across varying load conditions matters more than peak horsepower.

The 110-degree lobe separation angle is a critical specification that influences valve overlap and engine characteristics. This moderate LSA value promotes smooth idling and responsive mid-range torque while supporting steady power delivery through the rpm band. The hydraulic flat tappet design eliminates the complexity and cost of solid lifter conversions, making this cam a practical choice for rebuilds or upgrades where existing valvetrain components remain in service. The lift figures—0.507 intake and 0.510 exhaust—work within factory-type port shapes and cylinder head designs without requiring extensive machine work or performance porting.

This camshaft suits builders restoring or upgrading small block Chevy engines for street use, light towing, or weekend cruising where reliability and consistency outweigh maximum power output. The SBC Extreme Energy series from COMP Cams targets enthusiasts who need a step above stock cam profiles without committing to race-focused solid lifter technology. The 284/296 duration split and modest valve lift keep fuel and ignition systems working efficiently across the power band. Owners should verify their engine's current valvetrain specification and ensure piston-to-valve clearance before installation on any non-stock cylinder head combination.