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The SD45 is a six-axle diesel-electric locomotive class built by General Motors Electro-Motive Division between 1965 and 1971. It has an EMD 645E3 twenty-cylinder engine generating 3,600 hp (2,680 kW) on the same frame as the SD38, SD39, SD40, and SDP40.
Built by the Budd Company, but designed by EMD [1] 532 Baltimore and Ohio #50 August 1935 1,800 hp B-B Baltimore and Ohio Railroad (B&O) Chicago and Alton Railroad (C&A) Gulf, Mobile and Ohio Railroad (GM&O) 1937 (B&O) Stored at the National Museum of Transportation in St. Louis, Missouri: Built by General Electric (GE), but designed by EMD [2] [3]
The long hood of a locomotive is usually about as tall as the cab roof in order to fit the large prime mover and its related subsystems. Originally the short hood of the locomotive was the same height, which is referred to as a high-nose or, confusingly, high short hood. Starting in the mid to late 1950s, the height of the short hood was ...
Upon the 2005 sale, the company was renamed to Electro-Motive Diesel. EMD's headquarters and engineering facilities are based in McCook, Illinois, [note 1] while its final locomotive assembly line is located in Muncie, Indiana. EMD also operates a traction motor maintenance, rebuild, and overhaul facility in San Luis Potosí, Mexico.
The SD45T-2 is a model of diesel-electric locomotive built by EMD for the Southern Pacific Railroad.Like the later SD40T-2 it is colloquially nicknamed a tunnel motor. 247 total units (including the original EMD/SP joint venture working Prototype) were produced from February 1972 to June 1975, including 84 for SP's subsidiary Cotton Belt.
On the SD45 the long hood is flared whereas on the SD45-2 it is vertical and the rear cooling fans are more spread out on the top of the rear of the long hood. [1] This unit used the same frame as the EMD SD40-2 and EMD SD38-2. The largest owner of the SD45-2 was the Atchison, Topeka, & Santa Fe with 90 units, the Clinchfield had 18 units ...
GN 400 was the fourth SD45 built by EMD after the first three demonstrators. Great Northern christened it with its nickname, "Hustle Muscle." [2] All eight SD45s wore Great Northern's simplified orange and green paint scheme, but only 400 wore a nickname. In total, Great Northern owned 27 SD45s built from 1966 through 1968.
Cowl units were originally produced at the request of the Santa Fe railway, their EMD FP45 units having a full-width “cowl” body built on a EMD SDP45 hood unit's chassis—the SDP45, in turn, was a stretched version of the EMD SD45 freight unit.