EMD SW7

EMD SW7

Baltimore and Ohio No. 9624 TR4 cow-calf set at Riverside Yard, Baltimore, in 1969
Type and origin
Power type Diesel-electric
Builder General Motors Electro-Motive Division (EMD)
Model SW7, TR4
Build date October 1949 January 1951
Total produced SW7: 489
TR4: 15 sets
Specifications
Gauge 4 ft 8 12 in (1,435 mm) standard gauge
Prime mover EMD 567A
Engine type V12 diesel
Aspiration Roots-type supercharger
Cylinders 12
Performance figures
Power output 1,200 hp (895 kW)

The EMD SW7 was a diesel switcher locomotive built by General Motors Electro-Motive Division between October 1949 and January 1951. It was powered by a V12 567A engine developing 1,200 horsepower (895 kW). 489 SW7 locomotives were produced. The majority of the SW7s were built by EMD Plant #3 in Cleveland, Ohio. In addition, 15 TR4 cow-calf paired sets were produced.

Original buyers

SW7

Railroad Quantity Road numbers Notes
Arkansas and Louisiana Missouri Railway
1
11
Atlantic Coast Line Railroad
9
643–651
Central Railroad of New Jersey
4
1080–1083
Charleston and Western Carolina Railway
2
800–801
Chesapeake and Ohio Railway
26
5214–5239
Chicago and Eastern Illinois Railroad
6
126–131
Chicago and Eastern Illinois (Chicago Heights Terminal and Transfer Railroad)
2
132–133
Chicago and Illinois Western Railroad
3
101–103
Chicago, Burlington and Quincy Railroad
20
9249–9268
to Burlington Northern 115-134
Clinchfield Railroad
6
350–355
Colorado and Southern Railway
1
154
Conemaugh and Black Lick Railroad
15
103–117
Cornwall Railroad
3
120–122
Detroit and Toledo Shore Line Railroad
3
116–118
Detroit Terminal
1
116
Detroit, Toledo and Ironton Railroad
5
920–924
Erie Railroad
6
428–433
Great Northern Railway
11
163–170, 11–13
to Burlington Northern 135-145
Illinois Central Railroad
50
9300–9319, 9400–9429
Kansas City Southern Railway
10
1300–1309
Kansas City Southern Railway (Louisiana and Arkansas Railway)
6
1310–1315
Lakeside and Marblehead Railroad
1
12
Lehigh Valley Railroad
5
220–224
Louisiana Midland Railway
1
10
Louisville and Nashville Railroad
22
2245–2266
Maine Central Railroad
3
331–333
Milwaukee Road
1
1646
renumbered 623
Missouri Pacific Railroad
5
9142–9146
Monessen Southwestern Railway
1
21
Montour Railroad
1
72
Nashville, Chattanooga and St. Louis Railway
10
24–33
New York Central Railroad
34
8851–8855, 8880–8897, 8911–8921
New York Central (Indiana Harbor Belt Railroad)
40
8835–8850, 8856–8879
New York Central (Chicago River and Indiana Railroad)
6
8898–8903
New York Central (Peoria and Eastern Railway)
7
8904–8910
New York, Chicago and St. Louis Railroad (“Nickel Plate Road”)
3
230–232
Northern Pacific Railway
8
107–114
to Burlington Northern same
Pennsylvania Railroad
48
8861–8868, 8871–8872, 9358–9395
Peoria and Pekin Union Railway
5
406–410
Phelps Dodge Corporation (New Cornelia Branch Mine)
1
6
Philadelphia, Bethlehem and New England Railroad
4
31–34
River Terminal Railway
2
61–62
Southern Railway (Alabama Great Southern Railroad)
5
6505–6509
Southern Railway (Cincinnati, New Orleans and Texas Pacific Railway)
14
6060–6073
Southern Railway (Georgia Southern and Florida Railway)
4
8200–8203
Southern Railway (New Orleans and North Eastern Railway)
12
6852–6863
St. Louis Southwestern Railway (“Cotton Belt”)
4
1054–1057
renumbered 2200-2203
St. Louis-San Francisco Railway (“Frisco”)
5
300–304
Texas and Pacific Railway
4
1020–1023
Union Pacific Railroad
25
1800–1824
Union Railroad
4
571–574
Wabash Railroad
8
355–362
Weyerhaueser Timber Company
2
300–301
Woodward Iron Company
2
50–51
Built with 567B engines
Youngstown and Southern Railway
2
70–71
Total 489

TR4

Railroad Quantity Road numbers Notes
Atchison, Topeka and Santa Fe Railway
2 sets
2418,A–2419,A
Belt Railway of Chicago
5 sets
502AB–506AB
Chesapeake and Ohio Railway
2 sets
6001AB–6002AB
Milwaukee Road
6 sets
2001AB–2006AB
Total 15 sets

See also

References

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