The AEM7 was concieved in the mid-1970s as a successor to the famous Pennsylvania Railroad GG1 electric locomotive. A prototype design was sent to the US from Sweden in 1977. This would the base for the AEM7.
By 1978 General Motors Electro-Motive Division (EMD) began production. The bodies came from the Budd Company, with electrical, trucks amd mechanical parts imported from Sweden. The first AEM7 was delivered to to Amtrak and went into service in 1979.
In 1999 work began on a rebuild program for the AEM7. The AEM7s are to be rebuilt at Amtrak's shops in Wilmington, Delaware. Once rebuilt, they will have AC traction, improved propulsion and enriched torque.
|weight: || 101 tons
|length: || 51'
|horsepower: || 7000
|valign="top"|top speed: || 125 mph (Metroliner),
110mph (Acela Regional),
90 mph (long-distance trains) |}