| Model | Horsepower | Year(s) |
|---|---|---|
| 6RL73 | 6 | 1973 |
| 6RL74 | 6 | 1974 |
| 6RL75 | 6 | 1975 |
| 6RL76 | 6 | 1976 |
| 6RL77 | 6 | 1977 |
| 6RL78 | 6 | 1978 |
| 6RL79 | 6 | 1979 |
| 70EL76 | 70 | 1976 |
| 70EL77 | 70 | 1977 |
| 70EL78 | 70 | 1978 |
| 70EL79 | 70 | 1979 |
| 70ES74 | 70 | 1974 |
| 70ES75 | 70 | 1975 |
| 70ESL74 | 70 | 1974 |
| 70ESL75 | 70 | 1975 |
| 70ESLR74 | 70 | 1974 |
| 70ESLR75 | 70 | 1975 |
| 75ELR76 | 75 | 1976 |
| 75ELR77 | 75 | 1977 |
| 75ELR78 | 75 | 1978 |