THRUST BEARING: A special needle bearing secured to the cam sprocket or gear which prevents axial float of the camshaft into the timing case cover at high speed. This condition can drastically change [..]

 The area the horsepower curve envelops when plotted graphically from dynamometer torque and rpm readings.

 The concentric or round portion of the cam lobe where valve lash adjustments are made (also called the heel).

 A mechanical device which forces greater quantities of fuel and air into the engine's cylinders by means of rotating impellers which are driven from the power of the engine. The 2 most common ty [..]

 Refers to a supercharged engine.

 The amount of pressurized air forced into the engine by the supercharger, measured in lbs. per sq. in. or on the barometer in inches of mercury. One lb. per sq. in. equals approximately 2 inches of m [..]

 This expensive equipment compares and evaluates production cams to a precision master cam to check any possible variation.

 See "CAM PROFILE."

 Usually a roller or flat faced companion to the camshaft that transfers the action of the camshaft to the rest of the valve train by sliding or rolling on the cam lobe surface.

 After the design of the cam is computed, it's transferred to a precision template or master. The master is then installed in the cam grinding machine to generate the shape of the lobes of the pr [..]