The PRR Q-2s weighed 619,100 pounds, a massive number for a non-articulated locomotive, and developed 100,816 pounds of tractive force with a booster contributing 15,000 pounds for aid in starting heavy trains. With a grate area of nearly 122 square feet, they had 6725 square feet of evaporative heating surface, 2390 square feet of superheating surface, and 300 p.s.i. of boiler pressure. W. A. Ranke photographed No. 6180 in 1948 at Englewood, in Chicago, in an image that came from a Flickr site that went offline in 2008. The same image appears on the North East Rails site. By 1949 most of the Q-2s were in storage, their tasks taken over by more conventional and easier-to-maintain steam locomotives freed by dieselization from other duties.