More Power for Greater Service. "5400 Horses" on the St. Louis Southwestern Ry. Lines This diesel Freight Locomotive has four power units developing a total of 5400 horsepower at 800 R.P.M. Longer than the ordinary city lot, it is 193' in length--15'high-9' 10" wide and weighs 918,000 lbs. when fully loaded with 4,800 gallons of fuel oil.