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The F7 succeeded the F3 model in GM-EMD's F-unit series, and was replaced in turn by the F9. Final assembly was at GM-EMD's La Grange, Illinois, plant or GMD's London, Ontario, facility. There was no F4, -5 or -6 model; "7" was chosen to match the contemporary twin-engine E7, and was also applied to the new GP7 road-switcher.
The 567B engine was uprated to 1,500 hp (1.1 MW). Some F3s were nicknamed "chickenwire" for the type of engine room air-intake structure along the sides. The F7 (1949) and F9 (1954) were evolutionary: the F7 had improved traction motors, the F9 a 1,750 hp (1.30 MW) 567C engine. A louver arrangement over the vents changed their appearance from ...
The "S" designation originally stood for six hundred horsepower and the "N" designation for nine hundred horsepower, although they were used for the more general designation of smaller and larger engine models after the more powerful 567 model engines replaced the Winton engines. The "C" designation stood for cast frame locomotives and the "W ...
Santa Fe's aging fleet of F7 units were approaching retirement age in 1970. These units were remanufactured into switchers and named CF7. Santa Fe used them for a decade and sold many of them to short lines around the states. Many of those were still being used as of 2003. [4]
Most were rebuilt as simple engines, those not rebuilt were scrapped in the late 1920s. Image ... EMD F7. 15-EF. 118 units (68 A units, 50 B units) 1949–1953 1974 ...
EMD GP40PH-2: 4100, 4101, 4109 1968 1983 (inherited at inception) Diesel 3 3,000 hp (2,237 kW) Ex-Central Railroad of New Jersey GP40P; Rebuilt by Conrail 1991–1993. Last remaining units from a 13 engine order. 4101 painted in heritage NJDOT scheme. 4109 painted in heritage Central Railroad of New Jersey scheme. EMD GP40PH-2B: 4200–4219 ...
EMD introduced their new 710 engine in 1984 with the 60 Series locomotives (EMD SD60 and EMD GP60), the EMD 645 engine continued to be offered in certain models (such as the 50 Series) until 1988. The 710 is produced as an eight-, twelve-, sixteen-, and twenty-cylinder engine for locomotive, marine and stationary applications.
The EMD GP7 is a four-axle diesel-electric locomotive built by General Motors Electro-Motive Division and General Motors Diesel between October 1949 and May 1954. [2] The GP7 was the first EMD road locomotive to use a hood unit design instead of a car-body design.