For its final outing, Calais displayed the same front-end look as the more expensive DeVille, with a Cadillac "V" and crest at the hood front. Interiors could be Morgan Plaid in four possible color combinations, or expanded vinyl in antique light buckskin or black. Standard features included
Sedans had small coach windows on the rear pillar; coupes much larger, squarish rear quarter windows. Rear fenders held script nameplates. Electronic fuel injection had become optional on the 500 cu. in. V-8 in March 1975, but the carbureted version continued as standard.
| Model | Series Number | Body Style | Body Type | Seating | Factory Price | Shipping Weight | Production Total |
|---|---|---|---|---|---|---|---|
| Calais | 6C | C47 | 2-door Coupe | 6 | $8629 | 4989 | 4,500 |
| Calais | 6C | C49 | 4-door hardtop Sedan | 6 | $8825 | 5083 | 1,700 |
| Wheelbase | 130.0 in. |
| Overall length | 230.7 in. |
| Coupe Height | 53.8 in. |
| Sedan Height | 54.3 in. |
| Width | 76.4 in. |
| Front Tread | 61.7 in. |
| Rear Tread | 60.7 in. |
| Standard tires | GR78 x 15-B SBR wide WSW |
| Transmission | Three-speed Turbo Hydra-matic standard on all models; column shift (400 series) |
| Gear ratios | (1st) 2.48:1; (2nd) 1.48:1; (3rd) 1.00:1: (Rev) 2.07:1 or 2.09:1. |
| Standard final drive axle ratio | 2.73:1 |
| Optional axle ratio | 3.15:1 |
| Axle type | Hypoid rear axle |
| Steering | variable ratio power assisted |
| Front suspension | upper/lower control arms, coil springs, rod-and-link stabilizer bar |
| Rear suspension | four-link drive, coil springs |
| Body construction | separate body and perimeter frame |
| Wheel size | 15 x 6 JK |
| Brakes | front ventilated disc. rear drum with power booster |
| Ignition | HEI electronic ignition |
| Fuel tank | 27.5 gal. |
1975