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EMD SD9
Model of 1750 hp Co′Co′ American diesel locomotive / From Wikipedia, the free encyclopedia
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The EMD SD9 is a model of diesel locomotive built by General Motors Electro-Motive Division between January 1954 and June 1959. An EMD 567C 16-cylinder engine generated 1,750 horsepower (1.30 MW). Externally similar to its predecessor, the SD7, the SD9 was built with the improved and much more maintainable 567C engine.
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![]() Burlington Northern SD9 #6234. | |||||||||||||||||||||||||||||
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Four hundred and seventy-one SD9s were built for American railroads, while a further 44 were produced for export.
Many SD9s both high and short hood can still be found in service today on shortline railroads and industrial operators. Although most Class 1 roads stopped using these locomotives by the 1970s and 1980s, some remain in rebuilt form on some major Class I railroads, as switcher locomotives.[citation needed]