EMD SD45X

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EMD SD45X
Specifications
Power type	Diesel-electric
Builder	General Motors Electro-Motive Division (EMD)
Model	SD45X
Build date	June 1970 to February 1971
Total produced	7
AAR wheel arr.	C-C
UIC classification	Co'Co'
Gauge	4 ft 8¹⁄₂ in (1,435 mm)
Prime mover	EMD 20-645E3A
Cylinders	V20
Power output	4,200 hp (3,130 kW)
Career
Locale	United States

An EMD SD45X is a 6-axle experimental diesel-electric locomotive built by General Motors Electro-Motive Division between June 1970 and February 1971. Power was provided by an EMD 645E3A 20-cylinder engine which generated 4,200 horsepower (3,130 kW). 7 examples of this locomotive model were built for American railroads. 6 of these units would end up in service with Southern Pacific Railroad. One was rebuilt in 1980 by Morrison-Knudsen into an SD45Xm with a long hood from a scrapped DD35.

Original owners
Qty.	Railroad	Road Numbers	Date	Builders #s	Notes
1	EMD	4201	6/70	36806	EMD demo, to SP 9503, 12/72
2	EMD	4202, 4203	2/71	36807, 36808	EMD demo, to SP 9504-9505, 12/72
1	EMD	5740	6/70	34123
1	Southern Pacific	9500	8/70	35741
2	Southern Pacific	9501, 9502	9/70	35742, 35743

References

Pinkepank, Jerry A. (1973). The Second Diesel Spotter’s Guide. Milwaukee, WI: Kalmbach Publishing Company. ISBN 0-89024-026-4.
Sarberenyi, Robert. EMD SD45X Original Owners. Retrieved on August 27, 2006

v t e 6- and 8-axle diesel-electric locomotives built by GM-EMD

Six-axle road power	SD7 SD9 SD18 SD24 SD28 SD32ECO SD35 SDP35 SD38 SD38AC SD38-2 SD39 SDL39 SD40 SD40X SD40A SD40-2 SD40-2W SD40T-2 SD40-2S SDP40 SDP40F SD45 SD45X SD45-2 SD45T-2 SDP45 SD50 SD50F SD60 SD60F SD60I SD60M SD70 SD70I SD70M SD70MAC SD70M-2 SD70ACe SD75M SD75I SD80MAC SD89MAC SD90MAC

Eight-axle road power	DD35 DD35A DDA40X DDM45

See also: List of GM-EMD locomotives

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