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
an AM/FM radio with automatic power antenna
automatic climate control
digital clock
tinted glass
lamp monitors
power door locks
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.
STYLE
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
ENGINE
Item
Carburetor engine
Fuel Injected engine
Type
V-8 90-degree, overhead valve V-8. Cast iron block and head.
Displacement
500 cu. in. (8.2 liters)
500 cu. in. (8.2 liters)
Bore & stroke
4.300 x 4.304 in.
4.300 x 4.304 in.
Compression ratio
8.5:1
8.5:1
Brake horsepower
190 @ 3600 R.P.M.
215 @ 3600 R.P.M.
Torque
360 lb.-ft. @ 2000 R.P.M.
400 lb.-ft. @ 2000 R.P.M.
Main bearings
Five
Five
Valve lifters
Hydraulic valve lifters
Hydraulic valve lifters
Fuel distribution
4 Bbl. Rochester M4ME
Fuel Injection
CHASSIS
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
DRIVETRAIN
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