Petrol | ||||
| 3.8 Buick LD5 V6 | 105 hp / 77kW | Rear Wheel Drive | 1977-1978 | |
| 3.8 Buick LD5 V6 | 115 hp / 85kW | Rear Wheel Drive | 1978-1979 | |
| 5.0 Chevrolet LG3 Small-Block V8 | 135 hp / 99kW | Rear Wheel Drive | 1977-1978 | |
| 4.9 Pontiac 301 V8 Small-Block | 140 hp / 103kW | Rear Wheel Drive | 1978-1979 | |
| 5.0 Chevrolet LG3 Small-Block V8 | 145 hp / 107kW | Rear Wheel Drive | 1977-1978 | |
| 4.9 Pontiac 301 V8 Small-Block 4-bbl. | 150 hp / 110kW | Rear Wheel Drive | 1978-1979 | |
| 5.0 Chevrolet LG4 Small-Block V8 | 155 hp / 114kW | Rear Wheel Drive | 1978-1979 | |
| 5.0 Chevrolet LG4 Small-Block V8 | 160 hp / 118kW | Rear Wheel Drive | 1977-1978 | |
| 5.7 Buick 350 Small-Block V8 | 160 hp / 118kW | Rear Wheel Drive | 1977-1978 | |
| 5.7 Buick 350 Small-Block V8 | 165 hp / 121kW | Rear Wheel Drive | 1978-1979 | |
| 5.7 Buick 350 Small-Block V8 | 170 hp / 125kW | Rear Wheel Drive | 1977-1978 | |