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EMD SD40T-2
From Wikipedia, the free encyclopedia
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The SD40T-2 is a model of diesel-electric locomotive built by General Motors Electro-Motive Division in the United States. The SD40T-2 is equipped with a 16-cylinder EMD 645E3 diesel engine producing 3,000 horsepower (2,240 kW). 312 SD40T-2s were built for three railroads in the United States between April 1974 and July 1980. This locomotive and the SD45T-2 are popularly called tunnel motors, but EMD's term is SD40-2 with "cooling system modifications" because they were designed for better engine cooling in mountainous areas.[1] The difference between this locomotive and its non-tunnel motor cousin, the SD40-2, are the radiator air intakes are located lower down at the rear of the locomotive.

This article relies largely or entirely on a single source. (October 2022) |
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This locomotive model was purchased by the Denver and Rio Grande Western Railroad, the Southern Pacific Railroad, and its subsidiary Cotton Belt. Southern Pacific's version has a 4,400-US-gallon (16,700 L; 3,660 imp gal) fuel tank and is 70 feet 8 inches (21.54 m) long. Rio Grande's version has a smaller 4,000-US-gallon (15,100 L; 3,330 imp gal) fuel tank.
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Original purchasers
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Preservation
- Denver and Rio Grande Western #5371 is preserved at the Utah State Railroad Museum in Ogden, Utah.[2]
- Denver and Rio Grande Western #5401 is preserved at the Colorado Railroad Museum in Golden, Colorado.[3]
- From 2010 to 2019, Union Pacific #2921 (formerly Southern Pacific #8385) was preserved at the Boone and Scenic Valley Railroad in Boone, Iowa.[4] In 2020, the locomotive was traded to Midwest Locomotive Leasing (MWLX) for general service.
Comparison between an EMD SD40T-2 (left) and SD40-2 (right)
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References
External links
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