1987 - 4T60
| Model Code | Engine | Platform | Differential Ratio | Sprocket Ratio | Final Drive Ratio | Converter Code | Convertor Stall Speed |
| CAH | 2.8 V6 HO | A-Body | 3.33 | 35/35 | 3.33 | FD6B | 2095 |
| CBH | 2.8 V6 | A-Body | 3.33 | 35/35 | 3.33 | FD6B | 2095 |
| FCH, FLH | Buick 3.8 V6 | A-Body | 2.84 | 35/35 | 2.84 | FL4B | 1895 |
| ACH | Cadillac 4.1 V8 | C-Body | 3.33 | 35/35 | 3.33 | FL8C | 1525 |
| ADH, ARH | Cadillac 4.1 V8 | C-Body (Export) | 3.33 | 37/33 | 2.97 | FM8C | 1525 |
| ALH, AFH | Cadillac 4.1 V8 | C-Body & C-Body Limo | 3.33 | 37/33 | 2.97 | FM8C | 1525 |
| FTH | Buick 3.8 V6 | C-Body | 3.33 | 37/33 | 2.97 | FL4B | 1895 |
| FNH | Buick 3.8 V6 | C/H-Bodies | 2.84 | 37/33 | 2.53 | FL4B | 1895 |
| FBH, FKH | Buick 3.8 V6 | H-Body | 3.06 | 37/33 | 2.73 | FY4B | 1895 |
| FSH | Buick 3.8 V6 | H-Body (Export) | 2.84 | 35/35 | 2.84 | FL4B | 1895 |
| HAH | Buick 3.8 V6 | H-Body (Canada) | 3.06 | 37/33 | 2.73 | FY4B | 1895 |
| HCH | Buick 3.8 V6 | H-Body (Canada) | 3.33 | 37/33 | 2.97 | FL4B | 1895 |
| AHH | Cadillac 4.1 V8 | E/K-Bodies | 3.33 | 37/33 | 2.97 | FL8C | 1525 |
| FRH | Buick 3.8 V6 | E-Body | 3.33 | 37/33 | 2.97 | FL4B | 1895 |
| FZH | Buick 3.8 V6 | C-Body | 2.84 | 35/35 | 2.84 | FL4B | 1895 |