Made in USA. Class IV camshaft (245°-UP). Rough idle quality. Mid to high rpm torque and horsepower. For serious racing. Need proper selection of rear axle ration and improvements in carburation and exhaust system. For use with manual transmission or automatic with very high stall converter. Will not have enough vacuum for power acc essories. Melling offers a full line of high performance camshafts for domestic cars, light trucks, import vehicles, marine and high performance engines. Melling offers specific high performance camshaft choices for street, RV, strip and circle track racing applications. Melling camshafts supply the performance to suit your horsepower and torque requirements wherever and whenever you want it. Melling high performance camshafts are developed, engineered, tested and manufactured with the highest standards of quality and materials.