| exterior dimensions | coupe/sedan |
| overall length (in.) | 209.6/215.2 |
| wheelbase (in.) | 112/114 |
| luggage cap. (cu. ft.) | 16.3 |
| fuel tank(gals.) | 22 |
| interior dimensions | coupe | sedan |
| headroom f/r | 37.2/36.7 | ? |
| legroom f/r | 42.4/32.9 | ? |
| shoulder room f/r | 59.6/57.9 | ? |
Whats New For '77- All models have a new grille, but front fascias remain the same as in '76. As before The Supreme/Brougham/Salon share a grill design with the S having a seperate one. Instrument panel has been lightly restyled. The clock moved to the right side and rectangular air outlets replace the former round ones on the passenger side. The removable hatch roof was redesigned and now featured better latching. 3.8 V6 replaces the former inline six. Cutlass Supreme Brougham is now available as a four-door in addition to the new for '76 Brougham coupe.
Biggest News- All new downsized full size cars have approximately the same exterior dimensions as the mid-sized Cutlass. As a result, Oldsmobile considered not offering the four door for '77 as not to cannabilize the sales of its breakthrough "family size" cars.
The Car-
| exterior dimensions | coupe/sedan |
| overall length (in.) | 209.6/215.2 |
| wheelbase (in.) | 112/114 |
| luggage cap. (cu. ft.) | 16.3 |
| fuel tank(gals.) | 22 |
| interior dimensions | coupe | sedan |
| headroom f/r | 37.2/36.7 | ? |
| legroom f/r | 42.4/32.9 | ? |
| shoulder room f/r | 59.6/57.9 | ? |
Identifying a '77- Grill on Surpeme/Brougham/Salon shares the same basic shape as '76, but is composed of vertical bars accented by four heavier divider bars on each side