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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.
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 ...
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.
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 ...
The EMD SD40 is an American 6-axle diesel-electric locomotive built by General Motors Electro-Motive Division between January 1966 and August 1972. 1,268 locomotives were built between 1966 and 1972. In 1972, an improved version with new electronics was developed and marketed as a new locomotive, the SD40-2 .
In late 1965 EMD built their first twenty-cylinder engine, a turbocharged 3,600 hp (2,700 kW) V20 for the EMD SD45. The final variant of the sixteen cylinder 645 (the 16-645F) produced 3,500 hp (2,600 kW).
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.
Some SD45 and SD45-2 units have been modified by replacing their 20-cylinder engine with the 16-cylinder removed from scrapped SD40-2 units; this was common on Union Pacific and possibly other railroads. In many cases these are identified by the owner as SD40-3, SD40M-2 or some such. Confusingly, what appears to be an SD45 is labeled as an SD40-2.