SP C-628 page: 1965 system renumbering
1965 Renumbering:
In late 1965, the SP began a program to renumber the majority of its locomotive fleet into a consolodated system without regard for reporting mark.
| 1965 numbers | Orig. numbers | notes |
| SP 7100-7103 | SP 4870-4873 | Demonstrators |
| 1965 numbers | Orig. numbers | notes |
| SP 7104-7128 | SP 4845-4869 |