GP40-2s 770 and 764 by Frisco.org Posted on September 13, 2014 GP40-2s 770 and 764 GP40-2s 770 and 764 at Tulsa, Oklahoma in May 1980 (John Benson). This entry was posted in Slides and tagged 764, 770, Autorack, Electro-Motive Division, GP40-2. Bookmark the permalink.