@Rich Melvin posted:
As a point of continuing education, the are no dashes in EMD diesel model numbers. The locomotive is an GP7, not a GP-7.
The only place where EMD used dashes was in the “Dash 2” series, as in SD40-2, GP38-2, etc.
I edited your post to fix this.
Well, if we are going with extreme technicalities, EMD did not only use dashes for the "Dash 2" series, CSX has several Dash 3 locomotives such as the SD40-3 and SD50-3.