Petrol | ||||
| 2.5 Pontiac Tech IV Iron Duke | 88 hp / 65kW | Rear Wheel Drive | 1984-1986 | |
| 2.5 Pontiac Tech IV Iron Duke | 90 hp / 66kW | Rear Wheel Drive | 1981-1982 | |
| 2.5 Pontiac Tech IV Iron Duke | 92 hp / 68kW | Rear Wheel Drive | 1982-1984 | |
| 2.8 GM LC1 V6 | 102 hp / 75kW | Rear Wheel Drive | 1981-1982 | |
| 2.8 GM LC1 V6 | 107 hp / 79kW | Rear Wheel Drive | 1982-1984 | |
| 2.8 GM LL1 V6 (S/E) | 125 hp / 92kW | Rear Wheel Drive | 1982-1984 | |
| 2.8 GM LB8 V6 | 135 hp / 99kW | Rear Wheel Drive | 1984-1989 | |
| 3.1 GM LH0 V6 | 140 hp / 103kW | Rear Wheel Drive | 1989-1992 | |
| 5.0 Chevrolet LG4 Small-Block V8 | 145 hp / 107kW | Rear Wheel Drive | 1981-1982 | |
| 5.0 Chevrolet LG4 Small-Block V8 (S/E) | 145 hp / 107kW | Rear Wheel Drive | 1981-1982 | |
| 5.0 Chevrolet LG4 Small-Block V8 | 150 hp / 110kW | Rear Wheel Drive | 1982-1986 | |
| 5.0 Chevrolet LG4 Small-Block V8 | 155 hp / 114kW | Rear Wheel Drive | 1984-1985 | |
| 5.0 Chevrolet LU5 Small-Block V8 | 165 hp / 121kW | Rear Wheel Drive | 1981-1982 | |
| 5.0 Chevrolet L03 Small-Block V8 | 170 hp / 125kW | Rear Wheel Drive | 1986-1992 | |
| 5.0 Chevrolet LU5 Small-Block V8 | 175 hp / 129kW | Rear Wheel Drive | 1982-1983 | |
| 5.0 Chevrolet LB9 Small-Block V8 | 185 hp / 136kW | Rear Wheel Drive | 1986-1987 | |
| 5.0 Chevrolet L69 Small-Block V8 | 190 hp / 140kW | Rear Wheel Drive | 1983-1986 | |
| 5.0 Chevrolet LB9 Small-Block V8 | 190 hp / 140kW | Rear Wheel Drive | 1987-1989 | |
| 5.0 Chevrolet LB9 Small-Block V8 | 200 hp / 147kW | Rear Wheel Drive | 1989-1990 | |
| 5.0 Chevrolet LB9 Small-Block V8 | 205 hp / 151kW | Rear Wheel Drive | 1984-1992 | |
| 5.0 Chevrolet LB9 Small-Block V8 | 210 hp / 154kW | Rear Wheel Drive | 1985-1986 | |
| 5.7 Chevrolet L98 Small-Block V8 | 210 hp / 154kW | Rear Wheel Drive | 1986-1987 | |
| 5.0 Chevrolet LB9 Small-Block V8 | 215 hp / 158kW | Rear Wheel Drive | 1987-1989 | |
| 5.0 Chevrolet LB9 Small-Block V8 | 225 hp / 165kW | Rear Wheel Drive | 1988-1990 | |
| 5.0 Chevrolet LB9 Small-Block V8 (GTA) | 225 hp / 165kW | Rear Wheel Drive | 1988-1990 | |
| 5.7 Chevrolet L98 Small-Block V8 | 225 hp / 165kW | Rear Wheel Drive | 1987-1988 | |
| 5.0 Chevrolet LB9 Small-Block V8 | 230 hp / 169kW | Rear Wheel Drive | 1990-1992 | |
| 5.0 Chevrolet LB9 Small-Block V8 (GTA) | 230 hp / 169kW | Rear Wheel Drive | 1990-1992 | |
| 5.7 Chevrolet L98 Small-Block V8 | 235 hp / 173kW | Rear Wheel Drive | 1988-1990 | |
| 5.7 Chevrolet L98 Small-Block V8 | 240 hp / 176kW | Rear Wheel Drive | 1990-1991 | |
| 3.8 Buick LD5 V6 Turbo (20th Anniv.) | 245 hp / 180kW | Rear Wheel Drive | 1989 | |