What is meant by Basic RPM?
The camshaft’s basic RPM is the RPM range within which the engine will produce its best power. The width of this power band is approximately 3000 to 3500 RPM with standard lifter cams, and 3500 to 4000 RPM with roller lifter cams. It is important that you select the camshaft with the “Basic RPM Range” best suited to your application, vehicle gearing and tire diameter. Why is Cruise RPM at 60 MPH important? When selecting a new camshaft, you can raise or lower the engine’s basic RPM range. It is important to be sure the vehicle’s drive train is capable of matching your selection. The cruise RPM at 60 MPH is a way of rating your rear end gearing and tire diameter to determine if these components match the RPM potential you are desiring.
