1 generation [3th redesign] 1987–1989 2.5 Turbo Hydra-Matic 1987 → 2.8 MT 1987 → 2.8 Turbo Hydra-Matic 1987 → 2.8 Turbo Hydra-Matic Overdrave 1987 →
1 generation [redesign] 1983–1985 2.5 MT 1983 → 2.5 Turbo Hydra-Matic 1983 → 2.8 Turbo Hydra-Matic 1983 → 2.8 Turbo Hydra-Matic Overdrive 1983 → 4.3 D MT 1983 → 4.3 D Turbo Hydra-Matic 1983 → 4.3 D Turbo Hydra-Matic Overdrive 1983 →
1 generation 1981–1983 2.5 Turbo Hydra-Matic 1981 → 2.8 Turbo Hydra-Matic 1981 → 4.3 D Turbo Hydra-Matic 1981 → 4.3 D Turbo Hydra-Matic Overdrive 1981 →