By 1943, Busch-Sulzer engines were available in thirty distinct sizes, ranging from 250 to 3600 horsepower. Configurations ran from three to ten cylinders. The largest one used ten cylinders of a 20 1/2 x 27 1/2 inch bore and stroke. It was rated at 257 rpm. Note the extensive use of welded sections, as compared to the earlier cast iron sections. Shown here is a 2670 horsepower, eight-cylinder engine. Busch-Sulzer was absorbed into Nordberg in 1946.