EMD FP7 is a 1,500 horsepower (1,100 kW), B-B dual-service passenger and freight-hauling diesel locomotive produced between June 1949 and December 1953 by General Motors' Electro-Motive Division and General Motors Diesel. Final assembly was at GM-EMD's La Grange, Illinois plant, excepting locomotives destined for Canada, in which case final assembly was at GMD's plant in London, Ontario. The FP7 was essentially EMD's F7A locomotive extended by four feet to give greater water capacity for the steam generator for heating passenger trains.
E-units were successful passenger engines, their A1A-A1A wheel arrangement made them less useful in mountainous terrain. Several railroads had tried EMD's F3 in passenger service, but there was insufficient water capacity in an A-unit fitted with dynamic brakes. The Atchison, Topeka and Santa Fe Railway's solution was to replace the steam generators in A-units with a water tank, and so only fitted steam generators into the B-units. The Northern Pacific Railway's solution was to fit extra water tanks into the first baggage car, and to pipe the water to the engines. The real breakthrough came when EMD recognized the problem and added the stretched FP7 to its catalog.
A total of 381 cab-equipped lead
A units were built; unlike the freight series, no cabless booster B units were sold. Regular F7B units were sometimes used with FP7 A units, since they, lacking cabs, had more room for water and steam generators. The FP7 and its successor, the FP9, were offshoots of GM-EMD's highly successful F-unit series of cab unit freight diesels.
F3s, F7s, and F9s equipped for passenger service are not FP-series locomotives, which, although similar in appearance, have distinctive differences. This includes, but not limited to, the greater body length. The extra 4 ft (1.2 m) of length was added behind the first body-side porthole, and can be recognised by the greater distance between that porthole and the first small carbody filter grille. The corresponding space beneath the body, behind the front truck, was also opened up; this either remained an empty space or was filled with a distinctive water tank shaped like a barrel mounted transversely.
Original buyers [ edit ]
Locomotives built by EMD at La Grange, Illinois [ edit ]
F7B (where bought with FP7) Road numbers FP7
Road numbers F7B
Electro-Motive Division (demonstrator)
7002–7003 to Soo Line (Wisconsin Central) 2500A, 2500B, 2501B
Electro-Motive Division (demonstrator)
9052–9053 to Soo Line 500A, 500B, 501B
Arabian American Oil Company (Saudi Arabia)
— Built with 567C engines
Atlanta and West Point Rail Road
Atlantic Coast Line
1507 1510-1514 built with 567BC engines
Chicago and Eastern Illinois Railroad
1600–1609, 1609 2nd
— 1609 1st destroyed at Mode, IL 6/28/1951 and rebuilt on a new frame with same road number and serial number
Chesapeake and Ohio Railway
Chicago Great Western Railway
116-A, -C, 116-C 2nd 116-B,D,E,F,G
116-C 1st destroyed at North Hanover, IL 6/2/1951 and rebuilt on a new frame with same road number and serial number.
Chicago, Rock Island and Pacific Railroad
— repaint into family lines paint then to Seaboard System and renumbered to 118 then To CSX
Ferrocarriles Nacionales de México
Ferrocarril Sonora-Baja California
Florida East Coast Railway
Louisville and Nashville Railroad
90B–105B 90–94 renumbered 60–64 for freight service; 93A (63A) and 104A sold to GO Transit
Northern Pacific Railway
9832B–9858B (even) A units renumbered 4332-4371 and B units 4150-4163 by PRR for Penn Central; 18 scattered A units 4332-4370 to Conrail
— 900, 902, 903 to SEPTA, renumbered 4371-4373
Richmond, Fredericksburg and Potomac Railroad
St. Louis-San Francisco Railway
Soo Line (
Wisconsin Central Railway)
Southern Railway ( Cincinnati, New Orleans and Texas Pacific Railway)
Southern Pacific Company
6446-6451; 6453-6459; 6461 to Amtrak 110-123
St. Louis Southwestern Railway ("Cotton Belt")
— Renumbered to 306 then leased to Southern Pacific as SP 6462
Union Pacific Railroad
910B, 910C Renumbered to 1498 - 1499
Western Railway of Alabama
Western Pacific Railroad
Locomotives built by GMD at London, Ontario [ edit ]
(were bought with FP7) Road numbers FP7
Road numbers F7B
Canadian Pacific Railway
4028–4041, 4058–4063, 4066–4075, 4099–4103
Ontario Northland Railway
— 1500, 1503-1505, 1507, 1511-1514 sold to GO Transit
Preserved examples [ edit ]
Alaska Railroad 1510 and 1512, used by the Verde Canyon Railroad in Clarkdale, Arizona, on its excursion train.
Chicago Great Western Railway 116-A, on display, at Hub City Heritage Railroad Museum,  Oelwein, Iowa.
Canadian Pacific Railway 4038, at Minnedosa, MB.
Canadian Pacific Railway 4069, in working condition and in use at the West Coast Railway Heritage Park; see West Coast Railway Association.
Canadian Pacific Railway 4071, renumbered as Western Maryland Railway 243, in working condition and in use at the Durbin and Greenbrier Valley Railroad.
Clinchfield Railroad 200, renumbered as Western Maryland Railway 67, in working condition and in use at the Durbin and Greenbrier Valley Railroad.
Milwaukee Road 96C, in Monon livery, inoperable at the former Indiana Transportation Museum in Noblesville, Indiana. As of May 8th, 2019, the locomotive is up for auction.
Milwaukee Road 101A, on static display (was non-operational when acquired but reportedly restored by volunteers to operable condition ) in  Cresco, Iowa.
Milwaukee Road 104C, at the Illinois Railway Museum, Union, Illinois.
Reading 900, at the Reading Railroad Museum in Hamburg, Pa.
Reading 902, on display at Steamtown National Historic Site in Scranton, Pennsylvania.
Reading 903, also on display at Steamtown.
Soo Line 500A (né EMD demonstrator #9051), on display at Ladysmith, Wisconsin.
Soo Line 2500A (né EMD demonstrator #7001), restored to working condition, at Lake Superior Railroad Museum, Duluth, Minnesota.
Southern Railway 6133, in working condition at the North Carolina Transportation Museum at Spencer, North Carolina.
Southern Railway 6143 and 6147, in working condition and in use at the Stone Mountain Park at Atlanta, Georgia.
Southern Railway, 6141 and 6138 as R J Corman 1940-1941 in use by the Kentucky Dinner Train operation out of Bardstown, Kentucky. Western Pacific 805-A, a locomotive used on the famous , is preserved in operable condition at the California Zephyr Western Pacific Railroad Museum at Portola, California.
See also [ edit ]
References [ edit ]
Bibliography [ edit ]
Dorin, Patrick C. (1972). Chicago and North Western Power. Burbank, California: Superior Publishing. pp. 123–127. ISBN . 0-87564-715-4
Lamb, J. Parker (2007). Evolution of the American Diesel Locomotive. Railroads Past and Present. Bloomington, Indiana: Indiana University Press. ISBN . 978-0-253-34863-0
Marre, Louis A. (1995). Diesel Locomotives: The First 50 Years: A Guide to Diesels Built Before 1972. Railroad Reference Series. Waukesha, Wisconsin: Kalmbach Publishing. ISBN . 978-0-89024-258-2
Pinkepank, Jerry A. (1973). The Second Diesel Spotter's Guide. Milwaukee, Wisconsin: Kalmbach Publishing. ISBN . 978-0-89024-026-7
Schafer, Mike (1998). Vintage Diesel Locomotives. Enthusiast Color Series. Osceola, Wisconsin: MBI Publishing. ISBN . 978-0-7603-0507-2
Solomon, Brian (2000). The American Diesel Locomotive. Osceola, Wisconsin: MBI Publishing Company. ISBN . 978-0-7603-0666-6
Solomon, Brian (2005). EMD F-Unit Locomotives. North Branch, Minnesota: Specialty Press. ISBN . 978-1-58007-192-5
Solomon, Brian (2006). EMD Locomotives. St. Paul, Minnesota: Voyageur Press. ISBN . 978-0-7603-2396-0
Solomon, Brian (2010). Vintage Diesel Power. Minneapolis, Minnesota: MBI Publishing. ISBN . 978-0-7603-3795-0
Solomon, Brian (2011). Electro-Motive E-Units and F-Units: The Illustrated History of North America's Favorite Locomotives. Minneapolis, Minnesota: Voyageur Press. ISBN . 978-0-7603-4007-3
Solomon, Brian (2012). North American Locomotives: A Railroad-by-Railroad Photohistory. Minneapolis, Minnesota: Voyageur Press. ISBN . 978-0-7603-4370-8
Wilson, Jeff (1999). F Units: The Diesels That Did It. Golden Years of Railroading. Waukesha, Wisconsin: Kalmbach Publishing. ISBN . 978-0-89024-374-9 EMD Product Reference Data Card dated January 1, 1959 has the 567BC and 567C engine data used in the as-built roster.
External links [ edit ]