Leineweber Enterprises High Performance Camshaft Manufacturing All Leineweber Camshafts are manufactured in THE UNITED STATES OF AMERICA from heat-treated Aircraft Quality... Materials. The gear is pressed on in the conventional manner. Leineweber Camshafts encompass cam designs that produce more power than provided by other cams. Leineweber camshafts... range. Naturally the cam with the longer period of maximum lift will have superior flow characteristics. All Leineweber camshafts have superior duration, which offers a wider torque...