SP U25B 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.
SP:
| 1965 numbers | Orig. numbers | notes |
| SP 6700-6705 | SP 7500-7505 | |
| SP 6706-6714 | SP 7506-7514 | |
| SP 6715-6727 | SP 7515-7527 | |
| SP 6728-6764 | SP 7528-7564 | |
| SP 6765-6767 | SP 7565-7567 |