| Model | Horsepower | Year(s) |
|---|---|---|
| 4R74 | 4 | 1974 |
| 4R75 | 4 | 1975 |
| 4R76 | 4 | 1976 |
| 4R77 | 4 | 1977 |
| 4R78 | 4 | 1978 |
| 4R79 | 4 | 1979 |
| 4RL78 | 4 | 1978 |
| 4RL79 | 4 | 1979 |
| 4W69 | 4 | 1969 |
| 4W70 | 4 | 1970 |
| 4W71 | 4 | 1971 |
| 4W72 | 4 | 1972 |
| 4W73 | 4 | 1973 |
| 4W74 | 4 | 1974 |
| 4W75 | 4 | 1975 |
| 4W76 | 4 | 1976 |
| 4W77 | 4 | 1977 |
| 4W78 | 4 | 1978 |
| 4W79 | 4 | 1979 |
| 4WF69 | 4 | 1969 |