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GP38
| Production Dates |
January 1966 to December 1971 |
| Total Built |
706 |
| Engine |
16-645 |
| Horsepower |
2,000 |
GP38-2

| Production Dates |
January 1972 to July 1986 |
| Total Built |
2,222 |
| Length |
59 feet 2 inches |
| Engine |
16-645E3 |
| Horsepower |
2,000 |
| Alternator |
AR10 |
| Traction Motors |
D77B |
| Weight |
240,000-281,000 |
Two radiator fans and two exhaust stacks.

GP38AC

| Production Dates |
1971 to 1986 |
| Total Built |
261 |
| Horsepower |
2,000 |
| Alternator |
AR10 |
The same as a GP38 except with an AR10 alternating current alternator instead of the
regular direct current alternator.
GP38M-2 pictured below.
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