| Qty. | Road | Numbers | Date | Builder's #s | Phase | Air Filter | Notes |
|---|---|---|---|---|---|---|---|
| 13 | ATSF | 7500-7512 | 6/69 | 37098-37110 | IIb | paper | |
| 7 | ATSF | 7513-7519 | 7/69 | 37111-37117 | IIb | paper | |
| 9 | CB&Q | 460-468 | 4/69 | 36988-36996 | IIb | oil bath | triple-clasp trucks; to BN 5200-5208 |
| 4 | PC | 6700-6703 | 10/70 | 37540-37543 | IIc | paper | triple-clasp trucks, no d/b; to CR 6900-6903 |
| 1 | PC | 6704 | 11/70 | 37544 | IIc | paper | triple-clasp trucks, no d/b; to CR 6904 |
| 2 | PC | 6705,6706 | 10/70 | 37545, 37546 | IIc | paper | triple-clasp trucks, no d/b; to CR 6905,6906 |
| 1 | PC | 6707 | 11/70 | 37547 | IIc | paper | triple-clasp trucks, no d/b; to CR 6907 |
| 1 | PC | 6708 | 10/70 | 37548 | IIc | paper | triple-clasp trucks, no d/b; to CR 6908 |
| 1 | PC | 6709 | 11/70 | 37549 | IIc | paper | triple-clasp trucks, no d/b; to CR 6909 |
| 2 | PC | 6710,6711 | 10/70 | 37550, 37551 | IIc | paper | triple-clasp trucks, no d/b; to CR 6910,6911 |
| 7 | PC | 6712-6718 | 11/70 | 37552-37558 | IIc | paper | triple-clasp trucks, no d/b; to CR 6912-6918 |
| 2 | LS&I | 2300,2301 | 3,4/68 | 36706,36707 | IIa | oil bath | |
| 1 | LS&I | 2302 | 9/69 | 37138 | IIc | oil bath | |
| 2 | LS&I | 2303,2304 | 9/70 | 37572,37573 | IIc | oil bath | |
| 20 | RFFSA | 3901-3920 | 9-11/75 | 40608-40627 | IIh2 | paper | 63" gauge; Rede Ferroviaria Federap S.A.(Brazil Federal Railways) |
| GE's Brazilian licensee GE De Brazil constructed an additional 150 units for RFFSA, #3801-3880 (GE Brazil b/n #2500247-2500326) and #3921-3990 (GE Brazil b/n #2500623-2500692), many from partially fabricated "kits" supplied by GE in Erie, PA | |||||||
|
U23C Phases GE used a common body for the various U-boats, so this list is based on phases of the U30B. Phase II with the forward radiator intake mounted high had oil bath filters; low-mounted intake was for paper air filters. Phase IIa- entire hood below the radiator is the same width as the radiator itself, radiator intakes are redesigned, the raised section on the radiator disappears, a horizontal drip rail appears on the sides of the radiator, short exhaust stack, small taper just ahead of the radiator, pipe chain guards at right front corner. Phase IIb- the taper just ahead of the radiator disappears, six equipment doors on the left side instead of eight. Phase IIc- the intake screens become corrugated instead of flat, and project slightly from the hood instead of being flush-mounted. Phase IIh2- separate front headlight casing, hinges on front numberboards appear. | |||||||
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