SP 6100A-6119D
These were the first examples of the F3 model on the SP. Thirty-eight of the original forty units were transferred to the T&NO between mid 1949 and late 1951. All of these units were rebuilt as F9M's at EMD (first three) and SP Houston shops from 1954-1959. The last was vacated from the roster on 03/23/1970.
SP F3A's:
| Original number | 1949 number | T&NO number | F9M number |
| SP 6100A | T&NO 300 | T&NO 624 | |
| SP 6100D | T&NO 301 | T&NO 608 | |
| SP 6101A | T&NO 302 | T&NO 620 | |
| SP 6101D | T&NO 303 | T&NO 622 | |
| SP 6102A | T&NO 304 | T&NO 606 | |
| SP 6102D | T&NO 305 | T&NO 609 | |
| SP 6103A | T&NO 306 | T&NO 604 | |
| SP 6103D | T&NO 307 | T&NO 610 | |
| SP 6104A | T&NO 308 | T&NO 611 | |
| SP 6104D | T&NO 309 | T&NO 607 | |
| SP 6105A | T&NO 310 | T&NO 603 | |
| SP 6105D | T&NO 311 | T&NO 612 | |
| SP 6106A | T&NO 312 | T&NO 605 | |
| SP 6106D | T&NO 313 | T&NO 632 | |
| SP 6107A | T&NO 314 | T&NO 613 | |
| SP 6107D | T&NO 315 | T&NO 631 | |
| SP 6108A | T&NO 316 | T&NO 614 | |
| SP 6108D | T&NO 317 | T&NO 634 | |
| SP 6109A | SP 6118 | T&NO 318 | T&NO 633 |
| SP 6109D | SP 6119 | T&NO 319 | T&NO 637 |
| SP 6110A | SP 6120 | T&NO 320 | T&NO 601 |
| SP 6110D | SP 6121 | T&NO 321 | T&NO 635 |
| SP 6111A | SP 6122 | T&NO 326 | T&NO 630 |
| SP 6111D | SP 6123 | T&NO 327 | T&NO 628 |
| SP 6112A | SP 6124 | T&NO 324 | T&NO 602 |
| SP 61102 | SP 6125 | T&NO 325 | T&NO 616 |
| SP 6113A | SP 6126 | T&NO 330 | T&NO 636 |
| SP 6113D | SP 6127 | T&NO 331 | T&NO 617 |
| SP 6114A | SP 6128 | T&NO 332 | T&NO 621 |
| SP 6114D | SP 6129 | T&NO 333 | T&NO 623 |
| SP 6115A | SP 6130 | T&NO 334 | T&NO 619 |
| SP 6115D | SP 6131 | T&NO 335 | T&NO 626 |
| SP 6116A | SP 6132 | T&NO 328 | T&NO 618 |
| SP 6116D | SP 6133 | T&NO 329 | T&NO 629 |
| SP 6117A | SP 6134 | T&NO 336 | T&NO 625 |
| SP 6117D | SP 6135 | T&NO 337 | T&NO 627 |
| SP 6118A | SP 6136 | T&NO 322 | T&NO 615 |
| SP 6118D | SP 6137 | T&NO 323 | T&NO 600 |
| SP 6119A | SP 6138 | ||
| SP 6119D | SP 6139 |