Features: Adds 5%-10% power gain. Designed and dyno proven in the USA. Engineered by utilizing state-of-the-art valvetrain software. CNC machined from 8620 billet, case hardened steel for an exact fit and lobe profile. Select 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-end. For mid to top-end gains.. Made to be drop-in cams that use stock valve springs (unless noted).. Mid to top end rpm power increase and minimal bottom end loss. Designed with I.T.R. technology. For dual cam engine. Intake Valve Lash: 0.120 mm..