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History[]

Union Pacific 8000 was an experimental prototype 4-10-2 steam locomotive that was built by the American Locomotive Company (ALCO) for the Union Pacific Railroad.

The conclusions drawn from the test results were that, it was a bit too powerful, and deemed unsuccessful. It did pave the way for the larger and more successful 9000 Class 4-12-2s.

Union Pacific Locomotives
UP Class 700 No. 737
UP Class C-2 No. 237No. 264No. 561No. 616No. 618No. 6051No. 6237
UP Class C-57 No. 407No. 421No. 428No. 437No. 460No. 477No. 480No. 481No. 485
UP Class MK-1 No. 2005
UP Class MK-7 No. 2537
UP Class MK-9 No. 2295
UP Class MK-10 No. 2564
UP Class T-57 No. 1242No. 1243
UP Class P-1 No. 3206
UP Class P-2 No. 3203
UP Class TTT-6 No. 5511
UP Class S-4 No. 4407|No. 4420
UP Class S-5 No. 4436No. 4439No. 4442
UP Class S-6 No. 4455No. 4466
UP Class FEF-1 No. 814
UP Class FEF-2 No. 833
UP Class FEF-3 No. 838No. 844
UP Overlands No. 8000
UP Class 9000 No. 9000
UP Heavy Challengers No. 3977No. 3985
UP Big Boys No. 4004No. 4005No. 4006No. 4012No. 4014No. 4017No. 4018No. 4023
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