Cadillac's extra-long nine-passenger cars (Series 6700) were the only pillared four-door sedans in the line. Standard equipment was the same as on base 6300 models and Series 62 convertibles. Trimmings included a full-length lower beltline molding of a simple, but elegant design. Convertible top-look rooflines and windshields with forward "dog leg" style pillars were 1962 carry-overs seen exclusively on this line.
| Model No. | Style No. | Body Type | Seat | Factory Price | Shipping Weight | Production Total |
|---|---|---|---|---|---|---|
| 63-67R | 6723R |
4-door Sedan | 9 | $9724 | 2382 kg | 680 |
| 63-67S | 6733S |
4-door Limousine | 9 | $9939 | 2409 kg | 795 |
| 63-68 | 6890 | Commercial chassis | - | 2,527 |
NOTE: The commercial chassis featured a 3962mm wheelbase and was provided to professional car makers for construction of funeral cars, ambulances, etc.
| Type | V-8 |
| Valves | Overhead valves |
| Block | Cast iron block |
| Displacement | 6.384 Liters |
| Bore and stroke | 101.6mm x 98.4mm |
| Compression ratio | 10.5:1 |
| Horsepower | 325 hp @ 4800 rpm |
| Power | 242 kW @ 4800 rpm |
| Bearings | Five main bearings |
| Valve Lifters | Hydraulic valve lifters |
| Carburetion | Rochester four-barrel model 710930 |
NOTE:
| Wheelbase | 3805mm |
| Overall Length | 6180mm |
| Tires | 8.20 x 15 |
| Rear axle ratio | 3.36:1 |