| MODEL | MFGR | ENGINE | CYLS | HP | # OWNED | YRS BUILT | RD #s | RENUMBER | COMMENT |
| GP7 | EMD | 567B | 16 | 1500 | 250 | 50-53 | 2650-2893 | 1310-29, 2000-27, 2050-2243 | |
| " | " | " | " | " | " | " | FT rebuild: 99, 2899, 2013 | ||
| " | " | " | " | " | " | " | Cabless units: 2788A-2797A | ||
| GP7 Slugs | EMD/ATSF | n/a | 0 | 0 | 2 | 80-81 | 115 &119 | 1115 &1119 | |
| GP9 | EMD/ATSF | 567C | 16 | 1750 | 52 | 56-57 | 700-751 | 2900-2951-->2244-2299 | |
| GP20 | EMD | 567D2 | 16 | 2000 | 75 | 60-61 | 1100-1174 | 3100-74-->3000-74 | |
| GP30 | EMD | 567D3 | 16 | 2250 | 86 | 62-63 | 1200-1284 | 3200-84-->2700-84 | |
| " | " | " | " | " | " | " | Ex TP&W 700 | 3285-->2785 | |
| GP35 | EMD | 567D3 | 16 | 2250* | 161 | 64-69 | 1300-1460 | 3300-3460-->2800-2960 | *2500hp rebuilt |
| " | " | " | " | " | 3 | " | 900-902 | 3462-3464-->2961-2963 | ex TP&W |
| GP38 | EMD | 645 | 16 | 2000 | 61 | 70 | 3500-3560 | 2300-2360 | |
| GP38-2 | EMD | 645E | 16 | 2000 | 11 | 77-78* | TP&W 2001-11-->3561-71 | 2370-2380 | *acquired by ATSF '84 |
| GP39-2 | EMD | 645E | 12 | 2300 | 106 | 74-80 | 3600-3705 | 3100-3201-->3400-3449 | |
| GP40 | EMD | 645E3 | 16 | 2500* | 1 | 69** | 3461 | 2964 | *derated fm 3000 **fm TP&W '75 |
| GP40X | EMD | 645F | 16 | 3500 | 10 | 78 | 3800-3809 | ||
| GP50 | EMD | 645F | 16 | 3500 | 45 | 81-85 | 3810-3854 | ||
| GP60 | EMD | 710G | 16 | 3800 | 40 | 88-89 | 4000-4039 | ||
| GP60M | EMD | 710G | 16 | 3800 | 63 | 90 | 100-167 | ||
| GP60B | EMD | 710G | 16 | 3800 | 23 | 91 | 325-347 | ||
| HH-600 | Alco/GE | M&S 531 | 6 | 600 | 3 | 34 & 37 | 2300-02 | ||
| HH-1000 | Alco/GE | 539 (turbo) | 6 | 1000 | 12 | 39 | 2310-21 | ||
| H10-44 | F-M | 38D8-1/8 | 6 | 1000 | 3 | 45 & 48 | 500 ('45), 501-02 ('48) | ||
| H12-44 | F-M | ? | 6 | 1200 | 59 | 50-57 | 503-540, 544-564 | Opposed, 12 pistons | |
| H12-44TS | F-M | ? | 6 | 1200 | 3 | 56 | 541-543 | Opposed, 12 pistons | |
| H16-44 | F-M | ? | 8 | 1600 | 20 | 51-52 | 2800-2819 | 3000-3019 | Opposed, 16 pistons |
| MK1200G | M-K | Cat G35126 (LNG) | 16 | 1200 | 2 | 94 | 1200-1201 | ||
| NW | EMC/W | Winton 201-A | 12 | 900 | 3 | 37 | 2350-52 | 2400-02 | |
| NW2 | EMC | 567 | 12 | 1000 | 15 | 39-43 | 2353-67 | 2403-17 | |
| NW2 Slug | EMD/ATSF | n/a | 0 | 0 | 2 | 73 | 120, 121 | 1120, 1121 |