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ALCo 4-8-8-4 – photo 1© trainspo.com
Steam locomotive

ALCo 4-8-8-4

Built by ALCo 25−

Top speed
80 km/h
50 mph
Power output
4,690 kW
6,289 hp
Track gauge
1,435 mm
Standard gauge
Years built
1941
1,944 units
Axle arrangement
4-8-8-4

Overview of the ALCo 4-8-8-4

Discover the powerful 4-8-8-4 steam locomotive, a true icon of American railroading.

This impressive machine, built by ALCo in 1944, served the Union Pacific Railroad, showcasing exceptional engineering prowess.

With a remarkable power output of 4690 kW and a tractive effort of 602 kN, it was designed to conquer challenging terrains and heavy freight.

Featuring a standard gauge of 1435 mm and a top speed of 80 km/h, the 4-8-8-4 represents a significant era in steam locomotion.

Explore the legacy of this magnificent locomotive, a testament to the golden age of steam and its enduring appeal.

ALCo 4-8-8-4 technical specifications

Value
Built byALCo 25− · 19411,944 units
Top speed80 km/h50 mph
Power output4,690 kW6,289 hp
Tractive effort602 kN135,335 lbf
Track gauge1,435 mmStandard gauge4 ft 8½ in
Whyte notation4-8-8-4
Axle load540 t1,190,495 lb
Source of the data: en.wikipedia.orgView this model on trainspo.com Spotted an error? Let us know

Operators of the ALCo 4-8-8-4

Railway companies that have operated the 4-8-8-4, with the class designation used by each of them.

OperatorClassCountry
Union Pacific RailroadUP 4-8-8-4United States

ALCo 4-8-8-4 photos

Photos © their respective authors, shared on trainspo.com. They may show liveries or variants that differ from the specifications above.

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