| EMD GP40-2 | |
| Powertype: | Diesel-electric |
| Aarwheels: | B-B |
| Uicclass: | Bo'Bo' |
| Wheelbase: | 432NaN2 |
| Wheeldiameter: | 403NaN3 |
| Length: | 59feet |
| Height: | 15feet |
| Width: | 10feet |
| Locoweight: | 2500000NaN0 |
| Builder: | General Motors Electro-Motive Division General Motors Diesel (GMD) |
| Buildmodel: | GP40-2 |
| Builddate: | 1972–1986 |
| Totalproduction: | 1,143 |
| Primemover: | EMD 16-645E3 |
| Enginetype: | V16 diesel |
| Cylindercount: | 16 |
| Aspiration: | Turbocharged |
| Poweroutput: | 3000hp |
| Maxspeed: | 650NaN0 |
| Tractiveeffort: | 610000NaN0 |
The EMD GP40-2 is a 4-axle diesel-electric locomotive built by General Motors Electro-Motive Division as part of its Dash 2 line between April 1972 and December 1986. The locomotive's power is provided by an EMD 645E3 16-cylinder engine which generates 30002NaN2.
Standard GP40-2 production totaled 861 units, with 817 built for U.S. railroads, 44 for Mexican railroads. Furthermore, 279 GP40-2s were built by General Motors Diesel (GMD) between 1974 and 1976. In addition, three GP40P-2s, passenger versions of the GP40-2, were built in 1974. Total production of the GP40-2 and its variations totaled 1,143 units.
With the 62:15 gearing (65-70 mph maximum) EMD rated the GP40-2 at 55,400 lb continuous tractive effort. Some had PF21 module that reduced the output below 23 mph, lowering continuous speed down to 11 mph.
| Owner | Quantity | Numbers | Notes | |
|---|---|---|---|---|
| Atlanta and West Point Rail Road | 1 | 733 | to Seaboard System Railroad to CSX | |
| Alaska Railroad | 10 | 3000, 3007–3015 | 3000 renumbered to 3006 | |
| Baltimore and Ohio Railroad | 218 | 4100–4162, 1977, GM50, 4185–4256, 4287–4311, 4322–4351, 4422–4447 | Chessie System paint to CSX | |
| Boston and Maine Railroad | 18 | 300–317 | ||
| Chesapeake and Ohio Railway | 95 | 4165–4184, 4267–4281, 4372–4421 | Chessie System paint to CSX | |
| Ferrocarril Chihuahua al Pacífico | 29 | 1008–1036 | ||
| Conrail | 129 | 3275–3403 | To CSX and Norfolk Southern Railway, | |
| Denver and Rio Grande Western Railroad | 37 | 3094–3130 | All to Union Pacific Railroad. | |
| U.S. Department of Transportation | 1 | 003 | ||
| Detroit, Toledo and Ironton Railroad | 20 | 406–425 | to Grand Trunk Western Railroad 6406–6425. | |
| Florida East Coast Railway | 24 | 411–434 | 433–434 were last built | |
| Georgia Railroad | 2 | 755–756 | to Seaboard System Railroad to CSX | |
| Kansas City Southern Railway | 4 | 796–799 | ||
| Louisville and Nashville Railroad | 17 | 6600–6616 | Family Lines Paint, to Seaboard System Railroad to CSX | |
| Reading Company | 5 | 3671–3675 | to Conrail | |
| Richmond, Fredericksburg and Potomac Railroad | 7 | 141–147 | to CSX | |
| St. Louis – San Francisco Railway ("Frisco") | 25 | 750–774 | to Burlington Northern 3040–3064 | |
| St. Louis Southwestern Railway ("Cotton Belt") | 56 | 7248–7273, 7628–7657 | ||
| Seaboard Coast Line Railroad | 25 | 1636–1656. 6617–6621 | 6617–6621 Family Lines paint; all to Seaboard System Railroad now CSX | |
| Ferrocarril Sonora-Baja California | 15 | 2104–2112, 2309–2314 | 2104-2112 have High short hoods w/steam generator for passenger service only GP40-2 built with high short hoods | |
| Southern Pacific Transportation Company | 68 | 7240–7247, 7608–7627, 7658–7677, 7940–7959 | ||
| Texas, Oklahoma and Eastern Railroad | 3 | D15–D16, D20 | ||
| Western Maryland Railway | 35 | 4257–4261,4312–4321, 4352–4371 | Chessie System paint to CSX | |
| Western Pacific Railroad | 15 | 3545–3559 | ||
| Western Railway of Alabama | 1 | 708 | to Seaboard System Railroad to CSX | |
| Total | 861 |
| Railroad | Quantity | Road numbers | Notes | |
|---|---|---|---|---|
| Canadian National Railway | 268 | CN 9400–9667, 9668–9677 | CN 9400–9632 are GP40-2L, 9633–9677 are GP40-2W. CN 9668–9677 are former GO Transit units purchased in 1991. | |
| GO Transit | 11 | GO 700–710 | Ten to CN 9668–9677 in 1991. One (703) to Miami Tri-Rail, later sold to Aberdeen, Carolina & Western #703. | |
| Total | 279 |
Union Pacific has rebuilt 129 of their GP40's and GP40-2's into GP40N
CSX has rebuilt only one GP40-2 locomotive, numbered 6041 (originally BO 4141), into a hydrogen fuel cell locomotive in collaboration with CPKC on April 16, 2024. The unit's road number is 2100, and classified as GP38H2.[3]