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Experimental diesel-electric locomotive
EMD SD45X Southern Pacific
No. 9502 leads a freight train through the
Donner Pass in 1980
Performance figures Power output 4,200 hp (3,130 kW)
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).
History [ edit ]
A total of 7 units were ever built. 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 buyers [ edit ]
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 [ edit ]
Further reading [ edit ]
Four-axle roadswitchers Six-axle roadswitchers Eight-axle roadswitchers