For 1966 Cadillac offered 12 models in three series, Calais, DeVille, and Fleetwood. Cadillac “firsts” seen this season included variable ratio steering and optional front seats with carbon cloth heating pads built into cushions and seatbacks. Comfort and convenience innovations were head rests, reclining seats and an AM/FM stereo system. Engineering improvements made to the perimeter frame increased ride and ease of handling. Newly designed piston and oil rings were adoped and new engine and body mountings were employed. All models, except the 75 Series limousines, were mildly facelifted. Changes included a somewhat coarser mesh for the radiator grille insert, which was now divided by a thick, bright metal horizontal center bar housing rectangular parking lamps at its outer ends. A Cadillac crest and V-shaped molding trimmed the hood of Calais. Separate, rectangular side marker lamps replaced the integral grille extension designs. There was generally less chrome on all Cadillac models this year.
STYLE
Model Number
Style Number
Body Type
Seating
Factory Price
Shipping Weight
Production Total
66-682
68269-K
4-door Sedan
6
5171
4460
4,575
66-682
68239-N
4-door Hardtop Sedan
6
5171
4465
13,025
66-682
68257-G
2-door Hardtop Coupe
6
4986
4390
11,080
ENGINE
Type
V-8 Overhead valves
Block
Cast iron block
Displacement
429 cubic inches
Bore and stroke
4.13 x 4.00 inches
Compression ratio
10.5:1
Brake horsepower
340 @ 4600 rpm
Bearings
Five main bearings
Valve Lifters
Hydraulic valve lifters
Carburetor
Rochester four-barrel type, model 7026030
CHASSIS
Wheelbase
129.5 inches.
Overall length
224.2 inches.
Front tread
62.5 inches.
Rear tread
62.5 inches.
Automatic level control
standard where indicated in text.
A new engine mounting system and patented quiet exhaust were used.
Tires
8.00 x 15.
CONVENIENCE OPTIONS
Air conditioner
$495.
Controlled differential
$54.
Cruise Control
$97.
Door guards on two-door models
$4
Door guards on four-door models
$7.
Soft Ray tinted glass
$52.
Delete-option heater and defroster
$97 credit.
License plate frame
$6.
The new seat warmer
$60.20
Power door locks on four-door hardtop models
$70.
Power headlight control
$51.
Six-way power front seat on four-door hardtop models
$113
Head rests
$40.15
Power window regulators on four-door hardtop models
$119.
Power vent window regulator option
$73.
Radio with rear speaker
$165.
Radio with rear speaker and remote control
$246.
AM/FM radio
$191.
Rear seat belts
$18.
Front seat belt delete-option
$17 credit.
Adjustable steering wheel
$91.
Remote control trunk lock
$53.
Twilight Sentinel
$57.
Five white sidewall tires 9.00 x 15 size with four-ply construction
