A relatively minor restyling marked the 1970 Cadillac Calais. A facelift included a grille with 13 vertical blades set against a delicately cross-hatched rectangular opening. The bright metal headlamp surrounds were bordered with body color to give a more refined look. Narrow, vertical "vee" taillights were seen again, but no longer had smaller V-shaped bottom lenses pointing downward below the bumper. Wheel discs and winged crest fender tip emblems were new. A Calais signature script was placed above the rear end of the horizontal lower belt molding, just ahead of the chromed taillight dividers.
Standard equipment included Turbo Hydramatic transmission; power steering; front disc brakes; power windows; center front arm rest; electric clock; two front cigarette lighters; twin front and rear ash trays; complete interior and exterior courtesy lamps; safety, warning, and convenience lights; outside remote control lefthand mirror; visor vanity mirror; and L78-15 bias fiberglass blackwall tires.
| Model Number | Style Number | Body Type | Seating | Factory Price | Shipping Weight | Production Total |
|---|---|---|---|---|---|---|
| 70-682 | 68249N | 4-door Hardtop
Sedan | 6 | 5813 | 4680 | 5,187 |
| 70-682 | 68247G | 2-door Hardtop
Coupe | 6 | 5637 | 4620 | 4,724 |
| Engine type | Overhead valves |
| Block | Cast iron block |
| Bearings | Five main bearings |
| Valve Lifters | Hydraulic valve lifters |
| Displacement | 472 cubic inches (7.7 litres) |
| Bore and stroke | 4.30 x 4.06 inches (109 mm x 103mm) |
| Compression ratio | 10.0:1 |
| Brake horsepower | 375 at 4400 rpm |
| Torque | 525 ft. lbs @ 3000 rpm |
| Oil pressure | 35-40 psi |
| Carburetor | Rochester four-barrel Quadrajet Model 4MV |
| Wheelbase | 129.5 inches (329 cm) |
| Overall length | 225 inches (571.5 cm) |
| Tires | L-78x15 |
| Automatic Climate Control | $516 |
| Automatic Level Control on Calais and Deville | $79 |
| Special carpets with matching instrument carpet panels | $32 |
| Firemist paint as a special request option | $205 |
| Special paint (except Firemist) as a special request option | $179 |
| Dual Comfort front seat in Deville model L as special request option with standard cloth upholstery | $184 |
| Dual Comfort front seat in Deville model L as special request option with production leather upholstery | $316 |
| Cruise control | $95 |
| Rear window defogger | $26-37 |
| Door-edge guards | $6-10 |
| Dual Comfort seat with standard Brougham trim in all Deville models except Sedan | $105 |
| Soft Ray glass | $53 |
| Guide-Matic headlamp control | $51 |
| Leather upholstery | $156-184 |
| License frame(s) | $6-13 |
| Floor & trunk mats | $11-20 |
| Signal seeking radio AM/FM with rear control | $289 |
| Signal seeking radio AM/FM without rear control | $222 |
| Signal seeking radio with stereo | $322 |
| AM/FM radio | $188 |
| Power seats with Six-Way front | $90-116 |
| Power seats with Six-Way lefthand front with Dual-Comfort | $90- 116 |
| Shoulder belts | $32 |
| Tilt & telescope steering wheel | $95 |
| Electric powered sun roof with required vinyl top and Six-Way seat on all DeVilles except Convertible | $626 |
| Trumpet horn | $15 |
| Remote control trunk lock | $53 |
| Twilight Sentinel | $37 |
| Expanded vinyl upholstery in Calais | $42 |
| Vinyl roof in all Devilles except Convertible | $153 |
| White sidewall tires | $40 |
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