Just wondering if the “SD89MAC” is now the SD70ACe…because in photos this looks extremely similer.
This site might help, it’s too much info to type here, but according to it the SD89MAC is closer to the SD90MAC series. http://www.trainweb.org/moderndiesels/emdlocos.htm#anchor96186
Dave
The 89 is the 12 cylinder version of the H block (actually, crankcase) engine. It produces about 4500 HP and the 16 Cyl H block produces 6000 HP and is know as the SD90.