Gioacchino Colombo started out being the primary builder of Ferrari’s engines in the late in 1940’s and a major contributor to the success of Ferrari. Aurelio Lambredi became his assistant in 1947. Lambredi soon became convinced that a large engine that was naturally aspirated would have better fuel economy and provide more power. Colombo was of the belief that smaller engine compiled with a supercharger would produce the better results. Ferrari tested Lambredi’s idea and proved it to be successful. Lambredi was promoted to chief design engineer and Colombo returned to Alfa Romeo. The Lambredi engines were used in the ladder part of the 1950’s.