Adds 5%-10% power gainDesigned and dyno proven in the USAEngineered by utilizing state-of-the-art valvetrain softwareCNC machined from 8620 billet, case hardened steel for an exact fit and lobe profileSelect cams feature Hot Cams Improved Throttle Design (ITR) technology these cams improve throttle response throughout the entire rpm range while providing excellent power gains through the mid-range and top-endFor mid to top-end gains.Made to be drop-in cams that use stock valve springs (unless noted).