Editing EMD SD60 (section)

== History and development ==
The SD60 is essentially identical to the [[EMD SD50|SD50]] externally, but has a different prime mover, the new 16-cylinder EMD [[EMD 710|710G3A]], and a computer-controlled electrical system. [[Chicago & North Western]]'s railroad manual estimated that the SD60 is 3% more fuel efficient than one SD50, while a pair of SD60s was up to 16% more efficient than three SD40s pulling a standard coal train.<ref name=":1">{{Cite book|last=Solomon|first=Brian|url=https://books.google.com/books?id=DO0mXy33FB8C&pg=PA148|title=EMD Locomotives|year=2006 |publisher=Voyageur Press|isbn=978-1-61060-379-9|pages=148–151|language=en}}</ref>

[[Norfolk Southern]] has been modernizing their old SD60s since 2010 into SD60Es, a model specific to NS.<ref name=":0">{{Cite book|last=Esposito|first=Christopher|url=https://books.google.com/books?id=aLCIDwAAQBAJ&dq=SD60E&pg=PT62|title=Locomotives of the Eastern United States|date=2018-11-15|publisher=[[Amberley Publishing]]|isbn=978-1-4456-8303-4|language=en}}</ref>