The EMD SW8 is a diesel shunting/switching locomotive manufactured by General Motors Electro-Motive Division and General Motors Diesel between September 1950 and February 1954.
The Power of these engines is supplied by an EMD 567B 8-cylinder engine, for a total of 800 hp (600 kW). A total of 309 of this model were built for United States railroads and 65 for Canadian railroads.
The US Army ordered 41 SW8s, numbered 2000–2040, for service in Korea during the Korean War. These were shipped in the spring of 1951.
After the Korean War, many US Army-owned SW8s were turned over to the South Korean government while others were retained by the Army and assigned to various Army posts, depots and ammunition plants. Most were retired around 1990 and replaced in service by rebuilt geeps, such as GP10s from VMV in Paducah, KY, and other rebuilders.
In May 1953, a single example of the SW8 was built with a hydraulic transmission as model DH2. This locomotive was displayed at a trade show in 1955, but no sales of the DH2 followed. The locomotive was rebuilt with a standard electrical transmission, and served EMD as plant switcher #105 until 1968.
Trivia[]
- Starting in October 1953 a number of SW8s were built with either the 567BC or 567C engine.
- The first TR6A, Southern Pacific 4600, later numbered 1100, is preserved at the Western Pacific Railroad Museum at Portola, California.