The Reaper camshaft profiles produce more power and more torque increasing cranking compression, improving throttle response, acceleration and fuel mileage 525 Cams are a real workhorse, designed to increase torque band width and increase fuel economy Great bolt in camshaft upgrade for stock engines Produces strong low and mid range power with a linear horsepower and torque curve Can be used with factory valve springs, pushrods and lifters RPM 2,000 - 5,900 Feuling camshaft installation kits recommended Dyno proven and track tested