The EMD GP9 is a four-axle diesel-electric locomotive built for general-purpose freight and switching work by General Motors' Electro-Motive Division, with Canadian production by General Motors Diesel, from 1954 to 1963 as the successor to the GP7 in EMD's General Purpose line. It used a 16-cylinder EMD 567C prime mover to produce 1,750 horsepower, could run up to 65 miles per hour, weighed about 259,500 pounds and developed 64,750 pounds of tractive effort. EMD built 4,257 total units, including 165 cabless B units, and roughly 75 railroads bought them, including Union Pacific, Canadian National and the Pennsylvania Railroad; many GP9s remain in service today with shortline railroads after extensive rebuilding with modern components.
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