They were rebuilt by Norfolk Southern at its Juniata Ships in Altoona, Pa., in 2004-2005, emerging with a GP38H-3 and retaining their 520-series numbers. Amtrak also rostered 15 classic GP40 units ...

Between April 1972 and November 1986, EMD built 903 GP40-2 diesel locomotives. The four-axle road locomotive, rated at 3,000 ...