GP7 518 and GP38AC 649 by Frisco.org Posted on August 8, 2015 GP7 518 and GP38AC 649 GP7 518 and GP38AC 649 at Irving, Texas in August 1974 (C.D. Baker). This entry was posted in RT Collection and tagged 518, 649, Electro-Motive Division, GP38AC, GP7. Bookmark the permalink.