page_title: Pennsylvania Railroad class GG1
section_title: Disposition
hierarchical_section_title: Pennsylvania Railroad class GG1 / History / Disposition
caption_attribution_description: English: Amtrak GG1 904 at Harrison, New Jersey, June 1975.
context_page_description: The PRR GG1 was a class of electric locomotives built for the Pennsylvania Railroad, in the northeastern United States. Between 1934 and 1943 General Electric and the PRR's Altoona Works built 139 GG1s.
  The GG1 entered service with the PRR in 1935 and later ran on successor railroads Penn Central, Conrail and Amtrak. The last GG1 was retired by New Jersey Transit in 1983. Most have been scrapped, but sixteen are in museums.
context_section_description: In 1968 the PRR with its 119 surviving GG1s merged with the New York Central Railroad to form Penn Central. After its creation in 1971, Amtrak purchased 30 for $50,000 each, and  leased 21, of which 11 were for use on New York and Long Branch commuter trains. Amtrak renumbered the purchased GG1s #900–929 as a solid block, later renumbered with a prefix "4". The leased units with conflicting numbers were then renumbered 4930–4939, except 4935 which kept its old PRR/PC number.
  Amtrak attempted to replace the GG1s in 1975 with the General Electric E60, but they were not a success: a 102-mile-per-hour (164 km/h) derailment during testing had to be investigated (the E60 used the same trucks as the P30CH diesel then in service with Amtrak), which delayed acceptance, and the hoped-for 120 miles per hour (193 km/h) service speed was never achieved (timetable limit was 90 mph, then 80, then 90).
  It was not until Amtrak imported two lightweight European locomotives – X995, an Rc4a built by ASEA of Sweden and X996, a French design – that a replacement was found. The ASEA design, initially nicknamed the "Swedish swifty", or the "Mighty Mouse"—and later referred to often as the "Swedish Meatball"—was the winning design.  Electro-Motive Diesel, then a part of General Motors, was licensed to build it and it became the basis of the AEM-7. With AEM-7s on hand, Amtrak finally replaced its GG1s. GG1 service on Amtrak ended on April 26, 1980.
  Penn Central went bankrupt in 1970 and its freight operations were later assumed by government-controlled Conrail, which used 68 GG1s in freight service until the end of electric traction in 1980.
  The last GG1s in use were some of the 13 assigned to New Jersey Transit (#4872–4884) for its North Jersey Coast Line between New York and South Amboy (the former New York and Long Branch) that ran until October 29, 1983, thus retiring the locomotive after 49 years of service.
caption: Amtrak 904 westbound at Harrison, New Jersey in June 1975
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