© trainspo.comEMD GP40X
Built by EMD
Overview of the EMD GP40X
Discover the powerful GP40X diesel locomotive, a significant part of American railway history.
Built by EMD between 1977 and 1978, this model, known for its "GP40" series, showcases innovation and strength in freight transportation.
The GP40X served with prominent US railroads including the Atchison, Topeka and Santa Fe Railway (ATSF), BNSF Railway, Southern Pacific Transportation Company (SP), and Union Pacific Railroad (UP).
It proved its versatility and dependability across various operational demands.
Featuring a robust EMD 16-645F prime mover producing 2610 kW, and a standard 1435 mm gauge, this Bo'Bo' classification locomotive was a workhorse.
The GP40X stands as a remarkable example of engineering and performance, a preferred choice for long-haul freight transport and economic development.
EMD GP40X technical specifications
| Value | Imperial / US | |
|---|---|---|
| Series | GP40 | |
| Built by | EMD · 1977–197823 units | |
| Power output | 2,610 kW3,500 hp | |
| Prime mover | EMD 16-645F | |
| Track gauge | 1,435 mmStandard gauge4 ft 8½ in | |
| UIC axle arrangement | Bo'Bo' |
Operators of the EMD GP40X
Railway companies that have operated the GP40X, with the class designation used by each of them.
| Operator | Class | Country |
|---|---|---|
| Atchison, Topeka and Santa Fe Railway | ATSF GP40X | United States |
| BNSF Railway | BNSF GP40X | United States |
| Southern Pacific Transportation Company | SP GP40X | United States |
| Union Pacific Railroad | UP GP40X | United States |
EMD GP40X photos
Photos © their respective authors, shared on trainspo.com. They may show liveries or variants that differ from the specifications above.
More diesel locomotives from EMD

EMD
ENR G22W
Diesel locomotive
1977

EMD
SD40-2u
Diesel locomotive
1977

EMD
GP8
Diesel locomotive
1976–1978 · 105 km/h

EMD
GP25X
Diesel locomotive
1978

EMD
SD50
Diesel locomotive
1980–1987 · 2,610 kW

EMD
F40PH
Diesel locomotive
1976–1992 · 166 km/h

EMD
F40PH-2
Diesel locomotive
1976–1992 · 166 km/h

EMD
F40PH-2C
Diesel locomotive
1976–1992 · 166 km/h
Similar diesel locomotives from other manufacturers

Luhanskteplovoz
TE114K
Diesel locomotive
1977–1985 · 100 km/h

MaK
MaK G 761 C
Diesel locomotive
1977–1982

ALCo
C36-7M
Diesel locomotive
2,685 kW

GE
U36C
Diesel locomotive
2,700 kW

MLW
M636
Diesel locomotive
2,700 kW

BBC
SBB Am 6/6
Diesel locomotive
1976 · 85 km/h

FAUR
DR 119 / 219
Diesel locomotive
1976–1985

FAUR
L30H
Diesel locomotive
1976–1982