ACY 500
| 2000 hp, 10 cylinder OP diesel |
H-20-44
| L1044 | 1 | 147582 |
ACY 502
| sold as "Heavy Duty", later H-20-44 |
H-20-44
| L1046 | 1 | 147583 |
ACY 503
| 2000 hp with road trucks |
H-20-44
| L1047 | 1 | 147585 |
ACY 505
| last H-20-44 blt, to SWPC 410 in 1971 |
H-20-44
| 21L832 | 1 | 147587 |
ACY 507
| ex-P&WV 69, to ACY in 1967 |
H-20-44
| 21L712 | 1 | 147588 |
UP 1366
| blt as UP D.S. 1369, to SWPC 408 |
H-20-44
| L1042 | 1 | 104898 |