Union Pacific Diesel Locomotives
The Streamliners -- 1934 to 1953
This page was last updated on July 11, 2024.
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The locomotives shown here were in service between 1934 and 1953.
Locomotives delivered in 1946 and later (E7s, E8s, and E9s) are shown in the More Information section, below.
Turret-Cab, Rounded Nose (1934-1936)
| Road Number |
Previous Number |
Model | Qty. | In-Service Years |
Notes |
| M-10000 | Streamliner | 1 | 1934-1941 | ||
| M-10001 | Streamliner | 1 | 1934-1939 | ||
| M-10002 | Streamliner | 1 | 1936-1946 |
There were four locos built with the original turret-cab and rounded nose:
- M-10000
- original M-10001 (900 hp)
- second M-10001 (1200 hp)
- M-10002A (1200 hp)
The second M-10001 and the M-10002A are different in the rear truck - M-10001 is articulated, M-10002 is not.
These four locomotive were part of a dedicated trainset.
(View a photo of one of the Turret-cab locomotives)
Automotive-style Cab (1936)
| Road Number |
Previous Number |
Model | Qty. | In-Service Years |
Notes |
| M-10003 | Streamliner | 1 | 1936-1939 | Renumbered to CD-07 in 1939 | |
| M-10004 | Streamliner | 1 | 1936-1939 | Renumbered to LA-4 in 1938 | |
| M-10005 | Streamliner | 1 | 1936-1939 | Renumbered to CD-05 in 1939 | |
| M-10006 | Streamliner | 1 | 1936-1939 | Renumbered to CD-06 in 1939 |
| Road Number |
Previous Number |
Model | Qty. | In-Service Years |
Notes |
| CD-05-A, CD-05-B | M-10005 | Streamliner | 1 | 1939-1953 | Renumbered from M-10005 in 1937. |
| CD-05-C | LA-4 (B-unit) | Streamliner | 1 | 1939-1953 | Renumbered from LA-4 booster unit |
| CD-06-A, CD-06-B | M-10006 | Streamliner | 1 | 1939-1953 | Renumbered from M-10006 in 1937. |
| CD-06-C | Streamliner | 1 | 1939-1953 | Booster unit, rebuilt from LA-4 cab unit | |
| CD-07-A, CD-07-B | M-10003 | Streamliner | 1 | 1939-1953 | Renumbered from M-10003 in 1937. |
| CD-07-C | Streamliner | 1 | 1939-1953 | Built using components from M-10001 |
These four locomotives were stand-alone locomotioves, but were part of a dedicated trainset.
(View a photo of one of the Automotive-style cab locomotives)
EMC Locomotives, E2 to E7 (1937-1946)
These locomotive were stand-alone locomotive and (except LA-4) were not part of dedicated trainsets.
(View a photo of all three cab styles, turret-cab, automotive cab, and EMC cab)
| Road Number |
Previous Number |
Model | Qty. | In-Service Years |
Notes |
| 5-M-1A | LA-5 | E3A | 1 | 1941-1946 | Renumbered from LA-5 in 1941; renumbered to 951A in 1946 |
| 5-M-1B | LA-6 | E3B | 1 | 1941-1946 | Renumbered from LA-6 in 1941; renumbered to 952B in 1946 |
| 7-M-1A, 7-M-2A | E6A | 2 | 1940-1946 | Renumbered to 953A, 954A in 1946 | |
| (7-M-3B) | E7B | (Delivered in 1946 as UP 961B) | |||
| 8-M-1A, 8-M-2A | E6A | 2 | 1940-1946 | Renumbered to 955A, 956A in 1946 | |
| (8-M-3B) | E7B | (Delivered in 1946 as UP 962B) | |||
| 9-M-1A, 9-M-2A | E6A | 2 | 1940-1946 | Renumbered to 957A, 958A in 1946 | |
| (9-M-3B) | E7B | (Delivered in 1946 as UP 963B) | |||
| (10-M-1A, 10-M-2A) | E7A | 2 | (Delivered in 1946 as UP 959A and 960A) | ||
| (CP-1) | E7A | 1 | (Delivered in 1946 as UP 930A) | ||
| (CP-2) | E7B | 1 | (Delivered in 1946 as UP 931B) | ||
| LA-1 | E2A | 1 | 1937-1946 | Renumbered to 921A in 1946 | |
| LA-2, LA-3 | E2B | 2 | 1937-1946 | Renumbered to 922B, 923B in 1946 | |
| LA-4 | M-10004 | Streamliner | 1 | 1938-1939 | Renumbered from M-10004 in 1939; used to construct CD booster units in 1939 |
| LA-5 | E3A | 1 | 1939-1941 | Renumbered to 5-M-1A in 1941 | |
| LA-6 | E3B | 1 | 1939-1941 | Renumbered to 5-M-1B in 1941 | |
| LA-4 | E6A | 1 | 1941-1946 | Renumbered to 924A in 1946 | |
| LA-5, LA-6 | E6B | 2 | 1941-1946 | Renumbered to 925B, 926B in 1946 | |
| (LA-7) | E7A | 1 | (Delivered in 1946 as UP 927A) | ||
| (LA-8, LA-9) | E7B | 2 | (Delivered in 1946 as UP 928B, 929B) | ||
| SF-1 | E2A | 1 | 1937-1946 | Renumbered to 901A in 1946 | |
| SF-2, SF-3 | E2B | 2 | 1937-1946 | Renumbered to 902B, 903B in 1946 | |
| SF-4 | E6A | 1 | 1941-1946 | Renumbered to 904A in 1946 | |
| SF-5, SF-6 | E6B | 2 | 1941-1946 | Renumbered to 905B, 906B in 1946 | |
| (SF-7) | E7A | 1 | (Delivered in 1946 as UP 907A) | ||
| (SF-8, SF-9) | E7B | 2 | (Delivered in 1946 as UP 908B, 909B) |
More Information
UP's E7s -- Information about UP's E7 cab units and E7 cabless booster units.
UP's E7s -- Roster listings for UP's seven E7 cab units and seven E7 cabless booster units.
UP's E8s and E9s -- Information about UP's 46 E8s (18 cab units and 28 cabless booster units) and 69 E9s (35 cab units and 34 cabless booster units).
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