Transmission
| Code | Year | Transmission | |
| 1 | 1967 - 1973 | 3-Speed Manual (3.03)if used with 390 | Heavy Duty |
| 5 | 1967 - 1973 | 4-Speed Manual (2.78) | Wide Ratio |
| 6 | 1967 - 1971 | 4-Speed Manual (2.32) | Close Ratio |
| E | 1972 - 1973 | 4-Speed Manual (2.32) | Close Ratio |
| U | 1967 - 1973 | C-6 Automatic | |
| W | 1967 - 1968 | C-4 Automatic | |
| X | 1969 - 1973 | FMX Automatic |