EMD GP18 Diesel-Electric Locomotive
The EMD GP18 is a 4-axle diesel-electric locomotive built by General Motors, Electro-Motive Division between December 1959 and November 1963. Power was provided by an EMD 567D1 16-cylinder engine which generated 1,800 horsepower (1.34 MW). The GP18 replaced the GP9 in EMD's catalog. 350 examples of this locomotive model were built for American railroads, 40 units were built for Mexican railroads, 12 were built for export to a Brazilian railroad, 2 were exported to Peru, and 1 was exported to Saudi Arabia.

Original buyers

Railroad:  Aberdeen and Rockfish Railroad
Quantity:  1
Road numbers:  300

Railroad:  Baltimore and Ohio Railroad
Quantity:  1
Road numbers:  6599
Remarks:  GP18M 1,750 horsepower (1,300 kW)

Railroad:  Boston and Maine Railroad
Quantity:  6
Road numbers:  1750–1755
Remarks:  Mistakenly delivered as 1770 - 1775, but quickly renumbered to 1750-1755.

Railroad:  Central of Georgia Railway
Quantity:  8
Road numbers:  171–178
Remarks:  To Southern Railway 171 - 178.

Railroad:  Chicago and North Western Railway
Quantity:  6
Road numbers:  1774–1779

Railroad:  Grand Trunk Western Railroad
Quantity:  11
Road numbers:  4700–4707, 4950–4952
Remarks:  4950-4952 equipped with steam generators

Railroad:  Illinois Central Railroad
Quantity:  29
Road numbers:  9400–9428

Railroad:  Lehigh Valley Railroad
Quantity:  4
Road numbers:  302–305
Remarks:  To Conrail 7496 - 7499.

Railroad:  Louisville and Nashville Railroad
Quantity:  5
Road numbers:  460–464

Railroad:  Missouri Pacific Railroad
Quantity:  146
Road numbers:  400–499, 534–550, 4801-4829
Remarks:  400-499 built with AAR Type B trucks.

Railroad:  New York, Susquehanna and Western Railway
Quantity:  3
Road numbers:  1800, 1802, 1804
Remarks:  Sold in 2010 to East Penn Railroad.

Railroad:  New York, Chicago and St. Louis Railroad (“Nickel Plate Road”)
Quantity:  10
Road numbers:  700–709
Remarks:  To Norfolk and Western Railway 2700–2709.

Railroad:  Norfolk and Western Railway
Quantity:  48
Road numbers:  915–962

Railroad:  Norfolk Southern Railway
Quantity:  17
Road numbers:  1–17
Remarks:  To Southern Railway 180 - 196.

Railroad:  Northern Pacific Railway
Quantity:  9
Road numbers:  376–384
Remarks:  To Burlington Northern Railroad 1990 - 1998.

Railroad:  Phelps Dodge Corporation (New Cornelia Mine)
Quantity:  3
Road numbers:  44–46

Railroad:  Chicago, Rock Island and Pacific Railroad
Quantity:  24
Road numbers:  1238–1239, 1256, 1333–1353
Remarks:  1238–1239, 1256 are 1,500 horsepower (1,100 kW) GP18M.

Railroad:  Seaboard Air Line Railroad
Quantity:  10
Road numbers:  400–409
Remarks:  To Seaboard Coast Line Railroad 1056 - 1065.

Railroad:  Tennessee, Alabama and Georgia Railway
Quantity:  1
Road numbers:  801
Remarks:  Renumbered 50 soon after delivery; to Southern Railway 179.

Railroad:  Texas and Pacific Railway
Quantity:  5
Road numbers:  1145–1149
Remarks:  To Missouri Pacific Railroad 500 - 504.

Railroad:  Texas Mexican Railway
Quantity:  2
Road numbers:  854–855

Railroad:  Toledo, Peoria and Western Railway
Quantity:  1
Road numbers:  600
Remarks:  To Vermont Railway 801.

Railroad:  National Railways of Mexico (NdeM)
Quantity:  37
Road numbers:  7500 - 7536

Remarks:  7520-7529 equipped with steam generators.

Railroad:  Ministry of Communication and Transportation (Mexico)
Quantity:  3
Road numbers:  7123 - 5 to 7

Remarks:  To Sonora-Baja California 2304 - 2306.

Railroad:  Araraquara Railway (Brazil)
Quantity:  12
Road numbers:  1006–1017

Remarks:  1,600 mm (5 ft 3 in) gauge

Railroad:  Saudi Government Railways
Quantity:  1
Road numbers:  1200

Remarks:  GP18M 1,500 horsepower (1,100 kW)

Railroad:  Southern Peru Copper Corp.
Quantity:  2
Road numbers:  24-25

Total: 405

EMD GP18 Overview
Type and origin
Power type: Diesel-electric
Builder: General Motors, Electro-Motive Division (EMD)
Model: GP18
Build date: December 1959 – November 1963
Total produced: U.S.- 350 units, Mexico- 40 units, export- 15 units. 405 units total.
Specifications
Configuration:
​ • AAR B-B
Gauge: 4 ft 8 1⁄2 in (1,435 mm) standard gauge
Fuel capacity: 1,700 US gallons (6,400 l; 1,400 imp gal)
Prime mover: EMD 567D1
Engine type: V16 diesel engine
Aspiration: Roots blower
Cylinders: 16
Performance figures
Power output: 1,800 hp (1.34 MW)
Career
Locale: United States, Mexico, Brazil, Peru and Saudi Arabia

See also:

EMD Diesel Locomotives

Diesel Locomotives

GM-EMD

A GP18 Slideshow.

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East Penn Railroad EMD GP18 Locomotive at the end of their short line in Pennsburg, Montgomery County, Pennsylvania.
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East Penn Railroad EMD GP18 Locomotive at the end of their short line in Pennsburg, Montgomery County, Pennsylvania.

By Montgomery County Planning Commission (Pennsylvania) - https://www.flickr.com/photos/75012107@N05/16186131169, CC BY-SA 2.0, https://commons.wikimedia.org/w/index.php?curid=39817068

América Latina Logística (ALL) EMD GP18 No. 7007, ex-EFA,  ex-Fepasa, at Matão, Sao Paulo, Brazil.

By Henrique Aparecido Torres (Acervo de Henrique Aparecido Torres) [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0/)], via Wikimedia Commons