- Large steam generator section at rear of carbody, with plated over access doors and vents.
- HT-C trucks (groups of three holes in sideframes)
- Access doors without porthole windows
- Flat nose door
- Silencer housing around exhaust stack (high profile on 5251 and 5255, lower profile on the
others)
- Plow pilot
- Notches in nose around front stepwells (post 1989 only).
- Road Numbers:
- Amtrak 643, 511, 615, 630, 635, 526, 640, 622, 628,
633, 638, 634, 629, 639, 632, 649, 644, 645 (1984)
- 5250-5267 (from 1985-99)
- BNSF 6960-6977 (from 1998-?)
- Paint Schemes:
- Amtrak red/white/blue/silver (1984)
- blue and yellow warbonnet (1985-99), shown
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