GENERAL MOTORS/ELECTRO MOTIVE DIVISION LOCOMOTIVES
Model Year Wheel Horse Notes Built Arrangement Power Box Cab 1935 B-B 1800 EA/EB 1937-38 A1A-A1A 1800 Baltimore & Ohio E1A/E1B 1937-38 A1A-A1A 1800 Santa Fe E2A/E2B 1937 A1A-A1A 1800 Union Pacific E3A/E3B 1938-40 A1A-A1A 2000 E4A/E4B 1938-39 A1A-A1A 2000 Seaboard E5A/E5B 1940-41 A1A-A1A 2000 Burlington E6A/E6B 1940-42 A1A-A1A 2000 E7A/E7B 1945-49 A1A-A1A 2000 E8A/E8B 1949-54 A1A-A1A 2250 E9A/E9B 1954-64 A1A-A1A 2400 TA 1937 B-B 1200 Rock Island/for Rocket trains F3A/F3B 1946-49 B-B 1500 F7A/F7B 1949-53 B-B 1500 FP7 1949-53 B-B 1500 slightly longer than F7A/no B-units F9A/F9B 1953-60 B-B 1750 FL9 1957-60 B-A1A 1750 New Haven/dual power BL2 1948-49 B-B 1500 "Branch Line" predecessor to GP7 model GP7 1950-54 B-B 1500 GP9 1954-59 B-B 1750 GP18 1959-63 B-B 1800 SD7 1952-53 C-C 1500 SD9 1954-59 C-C 1750 SDP35 1964-65 C-C 2500 SDP40 1966 C-C 3000 SDP45 1967 C-C 3600 FP45 1967-68 C-C 3600 GP40P 1968 B-B 3000ALCO DIESEL LOCOMOTIVES
Model Year Wheel Horse Notes Built Arrangement Power DL-103 1939 A1A-A1A 2000 Rock Island DL-105 1940 A1A-A1A 2000 DL-107 1939-42 A1A-A1A 2000 DL-108 1939-42 A1A-A1A 2000 B-unit DL-109 1941-45 A1A-A1A 2000 DL-110 1941 A1A-A1A 2000 B-unit PA-1/PB-1 1946-50 A1A-A1A 2000 PA-2/PB-2 1950-53 A1A-A1A 2250 RS-1 1941-60 B-B 1000 RS-2 1946-50 B-B 1500 RS-3 1950-56 B-B 1600 RSC-2 1946-50 A1A-A1A 1500 RSC-3 1950-55 A1A-A1A 1600 RSD-4 1951-52 C-C 1600 RSD-7 1954-56 C-C 2400 RS-11 1956-61 B-B 1800 RS-36 1962-63 B-B 1800 C-420 1963-68 B-B 2000BALDWIN DIESEL LOCOMOTIVES
Model Year Wheel Horse Notes Built Arrangement Power DR-6-4-2000 1946-48 A1A-A1A 2000 B-unit also available DRX-6-4-2000 1946-48 A1A-A1A 2000 Central of New Jersey/double cab DR-12-8-3000 1947-48 2-D-D-2 3000 DRS-4-4-1500 1947-50 B-B 1500 DRS-6-4-1500 1946-48 A1A-A1A 1500 RS-12 1951-56 B-B 1200 AS-616 1950-54 C-C 1600FAIRBANKS MORSE DIESEL LOCOMOTIVES
Model Year Wheel Horse Notes Built Arrangement Power Erie Built 1945-49 A1A-A1A 2000 A-units and B-units available CFA-16-4 1950-53 B-B 1600 B-unit model CFB-16-4 CPA-20-5 1950 B-A1A 2000 only A-units built CPA-24-5 1951-52 B-A1A 2400 only A-units built H-15-44 1947-50 B-B 1500 H-16-44 1950-63 B-B 1600 H-16-66 1951-58 C-C 1600 H-24-66 1953-57 C-C 2400GENERAL ELECTRIC DIESEL LOCOMOTIVES
Model Year Wheel Horse Notes Built Arrangement Power U28CG 1966 C-C 2800 Santa Fe U30CG 1967 C-C 3000 Santa FeLIMA DIESEL LOCOMOTIVES
Model Year Wheel Horse Notes Built Arrangement Power LRS 1200 1950-51 B-B 1200Diesel locomotives would often run in multiple. And many railroads with their E-units and F-units, assigned a single number to a set of locomotive units, semi permanently coupled together. And each unit would have a letter following the overall number. Usually with an "A" for the lead unit, a "B" for the following unit, and a "C" or a "D" for any following units. A locomotive set might have a leading A-unit and only B-units behind, to give a passenger train a sleek streamlined look. Or often a locomotive set would be bidirectional, with an A-unit at each end and the cab at each end of the set.
But over the years, many railroads ceased to keep their locomotive sets together. Including railroads operating commuter trains in Chicago, which rarely had more than one locomotive. Some E-units might have been numbered with "A" or "B", but never actually operated coupled together for any significant amount of time, if at all. Computerization eventually led to railroads eliminating number schemes which used letters.
With the passenger locomotive roster pages at this section, usually the original numbers are used. Although for some railroads, a later numbering scheme is used if it simplifies how information is presented. Semi permanently coupled sets are presented as such. With the different letters running together for the locomotive number, and a sequence of A's and B's with the model designation reflecting the A-units and B-units.
Roster pages are complete for the E-units and other locomotives originally built specifically for passenger service. Also included are other known locomotives, equipped with steam generators for passenger service. Information is mostly complete for F-units. But information may be less accurate for road switchers (GP and RS type locomotives). With road switchers, with a locomotive order, not all locomotives in a consecutively numbered series were equipped for passenger service. Although every effort was made to verify accuracy and research where gaps existed. Many of those locomotives later had their steam generators removed and were reassigned to freight service.
Some locomotives were built using trade in components, often resulting in a horsepower reduced from the standard model at the time. Mostly E-units. Those locomotives have the model designation followed with the letter "M", for modified. For example, E8AM.