| EMD GP18 | |
| Powertype: | Diesel-electric |
| Gauge: | Most units: Brazilian units: 5 ft 3 in (1,600 mm) |
| Aarwheels: | B-B |
| Builder: | General Motors, Electro-Motive Division (EMD) |
| Buildmodel: | GP18 |
| Builddate: | December 1959 - November 1963 |
| Primemover: | EMD 16-567D1 |
| Enginetype: | V16 diesel engine |
| Cylindercount: | 16 |
| Aspiration: | Roots blower |
| Poweroutput: | 18002NaN2 |
| Totalproduction: | U.S.- 350 units, Mexico- 40 units, export- 15 units. 405 units total. |
| Locale: | United States, Mexico, Brazil, Peru and Saudi Arabia |
The EMD GP18 is a 4-axle diesel-electric locomotive built by General Motors, Electro-Motive Division between December 1959 and November 1963.[1] Power was provided by an 16-567D1 16-cylinder engine which generated 1800hp. 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.
The GP18 in many ways resembled its predecessors, the GP7 and GP9. It was designed nearly identically to the two previous models, but differed in having a metal grid over its radiator shutters, while the GP7 and GP9 instead incorporated a design described as looking like "chicken wire".[2] Additionally, the GP18 had 50 more horsepower than the GP9, for a total of 1,800 horsepower.
GP18s could be customized by their buyers: railroads ordered GP18s with either high or low short hoods, with or without dynamic brakes, and in the case of Grand Trunk Western, with the optional addition of steam generators.
| Railroad | Quantity | Road numbers | Notes | |
|---|---|---|---|---|
| 1 | 300 | |||
| 1 | 6599 | GP18M | ||
| 6 | 1750–1755 | Mistakenly delivered as 1770–1775, but quickly renumbered to 1750-1755 | ||
| 8 | 171–178 | To Southern Railway 171–178 | ||
| 6 | 1774–1779 | |||
| 11 | 4700–4707, 4950–4952 | 4950-4952 equipped with steam generators | ||
| 29 | 9400–9428 | |||
| 4 | 302–305 | To Conrail 7496–7499 | ||
| 5 | 460–464 | Renumbered 900–904, Then Seaboard System 1066–1070. | ||
| 146 | 400–499, 534–550, 4801-4829 | 400–499 built with AAR Type B trucks | ||
| 3 | 1800, 1802, 1804 | |||
| New York, Chicago and St. Louis Railroad (“Nickel Plate Road”) | 10 | 700–709 | To Norfolk and Western Railway 2700–2709 | |
| 48 | 915–962 | |||
| 17 | 1–17 | To Southern Railway 180–196 | ||
| 9 | 376–384 | To Burlington Northern Railroad 1990–1998 | ||
| Phelps Dodge Corporation (New Cornelia Mine) | 3 | 44–46 | ||
| 24 | 1238–1239, 1256, 1333–1353 | 1238–1239, 1256 are GP18M. | ||
| 10 | 400–409 | To Seaboard Coast Line Railroad 1056–1065 | ||
| 1 | 801 | Renumbered 50 soon after delivery; to Southern Railway 179 | ||
| 5 | 1145–1149 | To Missouri Pacific Railroad 500–504 | ||
| 2 | 854–855 | |||
| 1 | 600 | To Vermont Railway 801 | ||
| 37 | 7500–7536 | 7520-7529 equipped with steam generators | ||
| Ministry of Communication and Transportation (Mexico) | 3 | 7123 - 5 to 7 | To Sonora-Baja California 2304–2306 | |
| Araraquara Railway (Brazil) | 12 | 1006–1017 | gauge | |
| 1 | 1200 | GP18M | ||
| 2 | 24-25 | |||
| Total | 405 |