If you’re looking for even more than what Mellings Class III camshafts have to offer, then the Class IV and V are the next steps in performance. These camshafts off a rough idle, mid to high rpm torque, horsepower, and are designed for severe racing applications. Of course, if running an automatic transmission, a high stall converter is a must. Unlike the Class III camshaft, these will not produce enough vacuum for power accessories. , In this video, Cale describes each of the 14 NEW Performance Camshaft part numbers from Melling! Visit our online Parts look up here: HTTPS://WWW.MELLING.COM/PARTS-LOOKUP/ Download our GM LS Camshaft Flyer : https://www.melling.com/wp-content/uploads/2023/06/0523-Melling-GM-LS-Camshaft-Flyer-website-download.pdf, These LS cams offer good idle quality, low rpm torque, and improved mid-range performance. You can also keep the supporting modifications at a minimum as they will work with stock or a slightly modified engine and a manual or auto transmission..