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The SD40 is a member of EMD's long-running Special Duty class of locomotives, which all are built with 6 axles. In 1966, EMD updated its locomotive catalog with entirely new models, all powered by the new 645 diesel engine.
The EMD SD40-2 is a 3,000-horsepower (2,200 kW) C-C diesel–electric locomotive built by EMD from 1972 to 1989. The SD40-2 was introduced in January 1972 as part of EMD's Dash 2 series, competing against the GE U30C .
This is a summary, listing every diesel locomotive from the SD40-series in preservation. This list includes the models SD40 , SDP40 , SD40A , SD40-2 , SDP40F , SD40T-2 , SD40-2W , SD40-2S . SD40
The SD40A was designed as an EMD SD40 built on a frame of an EMD SDP45. The longer SDP45 frame allowed for a larger, 5000 gallon fuel tank. [1] This locomotive is powered by a 16-cylinder EMD 645E3 diesel engine, which could provide 3,000 horsepower (2,240 kW).
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.
It was finally halted by a railroad crew in a catch locomotive, which caught up with the runaway train and coupled their locomotive to the rear car. [3] As of 2024, the locomotive is still in service, having been rebuilt and upgraded into an SD40-3 as part of a refurbishment program carried out by CSX in 2015, although its number is now #4389. [4]
The "S" designation originally stood for six hundred horsepower and the "N" designation for nine hundred horsepower, although they were used for the more general designation of smaller and larger engine models after the more powerful 567 model engines replaced the Winton engines. The "C" designation stood for cast frame locomotives and the "W ...
The locomotives were GP38-2s, GP40-2s and GP40-2Ls, and SD40-2s. To denote the comfort cab locomotives, a "W" was often applied at the end of the model name (i.e. GP38-2W, GP40-2W, SD40-2W), although this was not an official designation. The Montreal Locomotive Works also offered a competitive cab design on their M-420 and M-630(W) models. EMD ...