SP GP30 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. However, the SSW units did retain their identity, but the numbers were assigned within the overall scheme.
SSW:
| 1965 numbers | Orig. numbers | notes |
| SSW 5000-5009 | SSW 750-759 |
SP:
| 1965 numbers | Orig. numbers | notes |
| SP 5010-5017 | SP 7400-7407 |