ALCo 4-8-4

Built by ALCo

Weight

221 t

487,221 lb

Track gauge

1,435 mm

Standard gauge

Years built

1944

9 units

Axle arrangement

2’D2’ h2

Overview of the ALCo 4-8-4

Discover the powerful 4-8-4 steam locomotive, a true marvel of engineering. This impressive engine, known for its iconic 4-8-4 wheel arrangement, represents the pinnacle of steam traction technology.

Weighing in at 221 tons and boasting a tractive effort of 284 kN, this locomotive was built to conquer challenging routes. It was constructed by ALCo in 1944 in the United States for the Union Pacific Railroad, belonging to the distinguished UP FEF-3 class.

With a standard gauge of 1435 mm, this versatile workhorse is ready for action. Experience the fascination and sheer power of this legendary 4-8-4 steam locomotive.

ALCo 4-8-4 technical specifications

	Value	Imperial / US
Series	4-8-4
Built by	ALCo · 19449 units
Tractive effort	284 kN63,846 lbf	63,846 lbf
Track gauge	1,435 mmStandard gauge4 ft 8½ in	4 ft 8½ in
UIC axle arrangement	2’D2’ h2
Whyte notation	4-8-4
Weight	221 t487,221 lb	487,221 lb