Petrol | ||||
| 3.8 Buick 231 V6 | 105 hp / 77kW | Rear Wheel Drive | 1975-1977 | |
| 3.8 Buick 231 V6 | 110 hp / 81kW | Rear Wheel Drive | 1974-1975 | |
| 5.7 Buick 350 Small-Block V8 | 140 hp / 103kW | Rear Wheel Drive | 1975-1977 | |
| 5.7 Buick 350 Small-Block V8 | 145 hp / 107kW | Rear Wheel Drive | 1974-1975 | |
| 5.7 Buick 350 Small-Block V8 | 150 hp / 110kW | Rear Wheel Drive | 1972-1973 | |
| 5.7 Buick 350 Small-Block V8 | 150 hp / 110kW | Rear Wheel Drive | 1973-1974 | |
| 5.7 Buick 350 Small-Block V8 4-bbl. | 155 hp / 114kW | Rear Wheel Drive | 1975-1977 | |
| 5.7 Buick 350 Small-Block V8 4-bbl. | 160 hp / 118kW | Rear Wheel Drive | 1974-1975 | |
| 5.7 Buick 350 Small-Block V8 4-bbl. | 165 hp / 121kW | Rear Wheel Drive | 1974-1975 | |
| 5.7 Buick 350 Small-Block V8 4-bbl. | 170 hp / 125kW | Rear Wheel Drive | 1976-1977 | |
| 5.7 Buick 350 Small-Block V8 4-bbl. | 175 hp / 129kW | Rear Wheel Drive | 1972-1973 | |
| 5.7 Buick 350 Small-Block V8 4-bbl. | 175 hp / 129kW | Rear Wheel Drive | 1973-1974 | |
| 7.5 Buick 455 Big-Block V8 | 190 hp / 140kW | Rear Wheel Drive | 1973-1974 | |
| 7.5 Buick 455 Big-Block V8 | 225 hp / 165kW | Rear Wheel Drive | 1972-1973 | |
| 7.5 Buick 455 Big-Block V8 4-bbl. | 230 hp / 169kW | Rear Wheel Drive | 1973-1974 | |