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EMD GP18

From Alfawiki
Electro-Motive Division
Company typeDivision of General Motors
IndustryLocomotive manufacturing
Headquarters
United States
ProductsDiesel-electric locomotives
ParentGeneral Motors

The EMD GP18 is a four-axle diesel-electric locomotive manufactured by General Motors, Electro-Motive Division from December 1959 through November 1963. Equipped with a 16-567D1 V16 engine producing , it was introduced as the successor to the EMD GP9 within EMD’s product range. A total of 405 units were produced: 350 served U.S. railroads, 40 were allocated to Mexico, and additional units were exported to Brazil, Peru, and Saudi Arabia.

Design and Production

The GP18 maintained a strong visual similarity to its forerunners, the GP7 and GP9, but featured notable modifications such as a metal grille covering the radiator shutters instead of the earlier "chicken wire" style. It offered an enhanced power rating of 1,800 horsepower—an increase of 50 hp over the GP9—reflected in its model designation.

Purchasers had the flexibility to specify options including either high or low short hoods, dynamic braking systems, and steam generators, which were incorporated in some units like those operated by the Grand Trunk Western Railroad.

Original buyers

Railroad Quantity Road numbers Notes
Aberdeen and Rockfish Railroad 1 300
Baltimore and Ohio Railroad 1 6599 GP18M 1,750 horsepower (1,300 kW)
Boston and Maine Railroad 6 1750–1755 Initially numbered 1770–1775, soon changed to 1750–1755
Central of Georgia Railway 8 171–178 Later transferred to Southern Railway as 171–178
Chicago and North Western Railway 6 1774–1779
Grand Trunk Western Railroad 11 4700–4707, 4950–4952 Units 4950-4952 included steam generators
Illinois Central Railroad 29 9400–9428
Lehigh Valley Railroad 4 302–305 Later became Conrail units 7496–7499
Louisville and Nashville Railroad 5 460–464 Renumbered to 900–904, then to Seaboard System 1066–1070
Missouri Pacific Railroad 146 400–499, 534–550, 4801-4829 Units 400–499 were built with AAR Type B trucks
New York, Susquehanna and Western Railway 3 1800, 1802, 1804 Sold in 2010 to East Penn Railroad
New York, Chicago and St. Louis Railroad (“Nickel Plate Road”) 10 700–709 Reassigned to Norfolk and Western Railway as 2700–2709
Norfolk and Western Railway 48 915–962
Norfolk Southern Railway 17 1–17 Transferred to Southern Railway as units 180–196
Northern Pacific Railway 9 376–384 Became part of Burlington Northern Railroad fleet numbered 1990–1998
Phelps Dodge Corporation (New Cornelia Mine) 3 44–46
Chicago, Rock Island and Pacific Railroad 24 1238–1239, 1256, 1333–1353 Units 1238–1239, 1256 are 1,500 horsepower (1,100 kW) GP18M models.
Seaboard Air Line Railroad 10 400–409 Later renumbered within Seaboard Coast Line Railroad as 1056–1065
Tennessee, Alabama and Georgia Railway 1 801 Quickly renumbered to 50; later transferred to Southern Railway, number 179
Texas and Pacific Railway 5 1145–1149 Reassigned to Missouri Pacific Railroad as units 500–504
Texas Mexican Railway 2 854–855
Toledo, Peoria and Western Railway 1 600 Later became Vermont Railway unit number 801
National Railways of Mexico 37 7500–7536 Units 7520-7529 included steam generators
Ministry of Communication and Transportation (Mexico) 3 7123 - 5 to 7 Transferred to Sonora-Baja California, numbered 2304–2306
Araraquara Railway (Brazil) 12 1006–1017 Template:Track gauge gauge
Saudi Government Railways 1 1200 GP18M 1,500 horsepower (1,100 kW)
Southern Peru Copper Corp. 2 24-25
Total 405


References

  • Pinkepank Diesel Spotters Guide, Volume 2
  • Diesel Era, September–October 1992, Volume 3, Number 5
  • Extra 2200 South, Issue 36, September–October 1972
  • EMD Road Switchers: GP18 – Utah Rails
  • EMD Repair Jobs – Utah Rails, September 12, 2014
  • GM Export Models – Utah Rails, September 22, 2015
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