SL-SF GP7 Locos:
This page is dedicated to SL-SF's fleet of GP7 locomotives. The SL-SF was the original owner of 128 GP7 units.
Note that there was a break in the numbering of the Frisco's GP7s with SL-SF 550-554 being assigned to the road's small fleet of RS2 units.
Original orders:
SL-SF:
| Orig. road numbers | EMD serial no. | build date | notes |
| SL-SF 500-509 | 9900-9909 | 2/1950 | steam generator |
| SL-SF 510-514 | 9910-9914 | 6/1950 | steam generator |
| SL-SF 515-519 | 10188-10192 | 6/1950 | |
| SL-SF 520-524 | 11794-11798 | 6/1950 | |
| SL-SF 525-534 | 11983-11992 | 10/1950 | |
| SL-SF 535-540 | 12919-12924 | 11-12/1950 | |
| SL-SF 541-542 | 13533-13534 | 12/1950 | |
| SL-SF 543-549 | 12935-12941 | 4/1951 |
| SL-SF 555-556 | 12942-12943 | 5/1951 | |
| SL-SF 557-562 | 14238-14243 | 11/1951 | steam generator |
| SL-SF 563-572 | 12925-12934 | 3/1951 | steam generator |
| SL-SF 573-584 | 13306-13317 | 8/1951 | |
| SL-SF 585-597 | 13318-13330 | 10-11/1951 | |
| SL-SF 598-605 | 14244-14251 | 11/1951 | steam generator |
| SL-SF 606-618 | 15573-15585 | 1/1952 | steam generator |
| SL-SF 619-632 | 15847-15860 | 2/1952 | steam generator |
GP7: SL-SF 500 9900 2/1950 to C&NW 4444 SL-SF 501 9901 2/1950 SL-SF 502 9902 2/1950 SL-SF 503 9903 2/1950 SL-SF 504 9904 2/1950 SL-SF 505 9905 2/1950 SL-SF 506 9906 2/1950 SL-SF 507 9907 2/1950 to C&NW 4377 SL-SF 508 9908 2/1950 SL-SF 509 9909 2/1950 to C&NW 4368 SL-SF 510 9910 6/1950 SL-SF 511 9911 6/1950 SL-SF 512 9912 6/1950 to C&NW 4376 to MRL 129 SL-SF 513 9913 6/1950 to IMCX 1535 SL-SF 514 9914 6/1950 to C&NW 4367 to WTJR 4367 SL-SF 515 10188 6/1950 SL-SF 516 10189 6/1950 to C&NW 4441 to HBR 2509 SL-SF 517 10190 6/1950 to C&NW 4454 to WTJR 4454 SL-SF 518 10191 6/1950 SL-SF 519 10192 6/1950 SL-SF 520 11794 6/1950 SL-SF 521 11795 6/1950 SL-SF 522 11796 6/1950 SL-SF 523 11797 6/1950 SL-SF 524 11798 6/1950 SL-SF 525 11983 10/1950 SL-SF 526 11984 10/1950 to ICG 7735 (GP8) SL-SF 527 11985 10/1950 to PNC 1501 to Agrico 1525/025 SL-SF 528 11986 10/1950 to C&NW 4445 to GWRX 4445 SL-SF 529 11987 10/1950 SL-SF 530 11988 10/1950 SL-SF 531 11989 10/1950 to PNC 531 SL-SF 532 11990 10/1950 to C&NW 4372 SL-SF 533 11991 10/1950 to C&NW 4364 to WTJR 4364 SL-SF 534 11992 10/1950 to ICG 83 (GP8) to ICG 7736 to ETRY 7736 SL-SF 535 12919 11/1950 to C&NW 4374 SL-SF 536 12920 12/1950 SL-SF 537 12921 12/1950 to PNC 537 to C&NW 4463 to CTEX 4463 to LTEX 4463 SL-SF 538 12922 12/1950 to PNC 1503 SL-SF 539 12923 12/1950 to PNC 539 to C&NW 4461 SL-SF 540 12924 12/1950 SL-SF 541 13533 12/1950 to PNCX 1502 SL-SF 542 13534 12/1950 SL-SF 543 12935 4/1951 SL-SF 544 12936 4/1951 to C&NW 4360 SL-SF 545 12937 4/1951 to PNC 545 to C&NW 4464 to GWRX 4464 to SO 106 SL-SF 546 12938 4/1951 to C&NW 4359 SL-SF 547 12939 4/1951 to RI 4493:1 to RI 4476 to C&NW 4151 to FRVR 4151 to WC 4151 SL-SF 548 12940 4/1951 to C&NW 4365 SL-SF 549 12941 4/1951 SL-SF 555 12942 5/1951 SL-SF 556 12943 5/1951 to C&NW 4378 SL-SF 557 14238 11/1951 to RI 4494 to RI 4477 to C&NW 4152 SL-SF 558 14239 11/1951 to ICG 8154 (GP10) to PAL 8154 SL-SF 559 14240 11/1951 to ICG 90 (GP8) to ICG 7719 to PREX 805 SL-SF 560 14241 11/1951 SL-SF 561 14242 11/1951 SL-SF 562 14243 11/1951 to PNCX 562 to C&NW 4451 to WTJR 4451 SL-SF 563 12925 3/1951 SL-SF 564 12926 3/1951 SL-SF 565 12927 3/1951 SL-SF 566 12928 3/1951 SL-SF 567 12929 3/1951 to ICG 91 (GP10) to ICG 8046 to Relco 1606 SL-SF 568 12930 3/1951 SL-SF 569 12931 3/1951 to C&NW 4442 to SO 104 SL-SF 570 12932 3/1951 to PNC 570 to C&NW 4450 SL-SF 571 12933 3/1951 to ICG 7703 (GP8) SL-SF 572 12934 3/1951 to C&NW 4460 to GWRX 4460 to SPCX 502 to MPCX 502 SL-SF 573 13306 8/1951 to C&NW 4373 SL-SF 574 13307 8/1951 to C&NW 4455 to SO 105 scrapped 3/2003 SL-SF 575 13308 8/1951 SL-SF 576 13309 8/1951 to PNC 576 SL-SF 577 13310 8/1951 to C&NW 4371 SL-SF 578 13311 8/1951 SL-SF 579 13312 8/1951 SL-SF 580 13313 8/1951 to ETI 1001 SL-SF 581 13314 8/1951 to Farmers Export 581 Ama, LA SL-SF 582 13315 8/1951 to C&NW 4465 to GWRX 4465 to SPCX 504 SL-SF 583 13316 8/1951 to C&NW 4361 SL-SF 584 13317 8/1951 to ETI 1002 SL-SF 585 13318 10/1951 to ICG 81 (GP8) to ICG 7735 to PAL 7735 to PAL 8307 to JTPX 8307 to ETRY 7735 SL-SF 586 13319 10/1951 to C&NW 4369 SL-SF 587 13320 10/1951 SL-SF 588 13321 10/1951 to ICG 82 (GP10)to ICG 8249 wrecked 10/25/1984 SL-SF 589 13322 10/1951 to C&NW 4363 SL-SF 590 13323 10/1951 to C&NW 4443 to WTJR 4443 SL-SF 591 13324 10/1951 to C&NW 4366 SL-SF 592 13325 10/1951 SL-SF 593 13326 11/1951 SL-SF 594 13327 11/1951 SL-SF 595 13328 11/1951 SL-SF 596 13329 11/1951 to ICG 7716 (GP8) SL-SF 597 13330 11/1951 to C&NW 4459 to HBR 2507 SL-SF 598 14244 11/1951 to C&NW 4453 to GWRX 4453 to SPCX 506 SL-SF 599 14245 11/1951 to PNCX 599 SL-SF 600 14246 11/1951 SL-SF 601 14247 11/1951 SL-SF 602 14248 11/1951 SL-SF 603 14249 11/1951 SL-SF 604 14250 11/1951 to C&NW 4362 SL-SF 605 14251 11/1951 to C&NW 4370 to WTJR 4370 SL-SF 606 15573 1/1952 to ICG 10 to ICG 7723 (GP8) SL-SF 607 15574 1/1952 to KRPD 607 SL-SF 608 15575 1/1952 to CAGY 608 SL-SF 609 15576 1/1952 SL-SF 610 15577 1/1952 to PNCX 610 to AMTK 760 to LTEX xxxx SL-SF 611 15578 1/1952 SL-SF 612 15579 1/1952 SL-SF 613 15580 1/1952 SL-SF 614 15581 1/1952 to CAGY 614 SL-SF 615 15582 1/1952 rblt by EMD to ICG 70 to ICG 7732 (GP8) SL-SF 616 15583 1/1952 to KRPD 616 SL-SF 617 15584 1/1952 SL-SF 618 15585 1/1952 to CAGY 618 SL-SF 619 15847 2/1952 to C&NW 4375 SL-SF 620 15848 2/1952 to C&NW 4447 SL-SF 621 15849 2/1952 to PNC 621 to AMTK 761 SL-SF 622 15850 2/1952 SL-SF 623 15851 2/1952 to ICG 80 (GP8) to ICG 7720 to ICG 8420 to G&O 8420 SL-SF 624 15852 2/1952 SL-SF 625 15853 2/1952 SL-SF 626 15854 2/1952 SL-SF 627 15855 2/1952 to C&NW 4458 SL-SF 628 15856 2/1952 SL-SF 629 15857 2/1952 SL-SF 630 15858 2/1952 to Peabody Coal 602 SL-SF 631 15859 2/1952 to ICG 7717 (GP8) SL-SF 632 15860 2/1952 to C&NW 4457