SB Mopar Extreme Energy Cam CRSXE274H-10

The SB Mopar Extreme Energy Cam CRSXE274H-10 is a purpose-built hydraulic flat tappet camshaft engineered for small block Mopar engines demanding aggressive street and strip performance. COMP Cams designed this cam for builders and enthusiasts who need reliable lift and duration without the complexity of solid lifter conversions. Whether you're rebuilding a classic Dodge, Plymouth, or Chrysler engine or maximizing an existing platform, this hydraulic design eliminates the need for specialized valve train modifications while delivering measurable power gains across the RPM band.

Built with COMP Cams' proven Xtreme Energy profile, the SB Mopar Extreme Energy Cam features 0.488-inch intake and 0.491-inch exhaust valve lift with 274 and 286 degrees of duration respectively—a potent combination optimized for broad torque delivery and peak horsepower production. The 110-degree lobe separation angle (LSA) provides excellent streetability while maintaining aggressive overlap characteristics that favor low-to-mid-range responsiveness. Operating between 1,800 and 6,000 RPM, this hydraulic flat tappet design uses traditional hydraulic lifters for automatic valve lash compensation, eliminating the need for frequent rocker arm adjustments and making it ideal for street-driven applications where reliability matters.

Performance enthusiasts and engine builders restoring or upgrading small block Mopar engines will find this camshaft delivers exceptional value for naturally aspirated builds targeting 350–450 horsepower ranges. The hydraulic flat tappet design maintains full compatibility with factory and modern aftermarket valve train components, reducing total build cost compared to solid lifter alternatives. Installation requires proper break-in procedures and quality engine oil; users should verify distributor compatibility and consider matching the cam profile with appropriate fuel system, intake, and exhaust modifications to maximize effectiveness across your intended RPM range.