Deville Cadillac History 1977

Deville Cadillac Models & History 1977

The new-generation Fleetwood/DeVille was, in Cadillac’s words, “engineered from the ground up, to make more efficient use of space.” That meant a new body, new chassis, new suspension, and new engine, in an integrated design. Trunk space grew larger. DeVilles gave more rear leg/headroom. Broughams (below) were just as spacious as before. DeVilles (and Fleetwoods) wore a new horizontal crosshatch grille with four horizontal and nine vertical divider bars, peaking forward at the center, topped by a “Cadillac” script nameplate at the side of the wide upper bar. The grille pattern of wide holes was repeated down at the bumper, between the license plate and bumper guards. Small vertical parking/signal lamps just outside the grille, quad rectangular headlamps reaching all the way out to fender edges, and large cornering lenses at the side, were all the same height as the grille. That combination gave the whole front end a wide, uniform appearance that flowed into the bodysides. All that was topped off by a stand-up crest hood ornament. In sum, it carried on the traditional Cadillac look. Bodies had full rear wheel openings and vertical taillamps. New bumpers had dual rubber strip protective inserts.

1977 Cadillac Sedan de Ville

The new instrument panel had a “central control area” that allowed both driver and passenger to reach air conditioning, radio, and accessory controls. Options included wire wheel discs, opera lamps, and accent stripes. Standard DeVille/Fleetwood equipment included

  • wide-whitewall steel-belted radial tires
  • variable-radio power steering (fixed ratios on limos)
  • cornering lights
  • lamp monitors
  • power windows and door locks
  • Soft Ray tinted glass
  • three-speed wiper/washers
  • Freedom battery
  • digital clock
  • color-keyed litter container
  • six-way power driver’s seat
  • center armrests
  • visor vanity mirror
  • turbo Hydra-matic transmission

Automatic climate control was redesigned so it operated only when necessary. Aberdeen cloth upholstery came in light yellow-gold, dark blue, medium saffron, and claret. Ribbed Dynasty cloth came in six colors (including claret). Eleven other interior choices featured leather (including white). The standard AM/FM radio included an automatic power antenna. The DeVille d’Elegance special edition added pillow-style 50/50 Dual Comfort seats in Medici crushed velour cloth in claret, medium saffron, dark blue, or light buckskin color). Upper door pads, inserts in door pull straps, and front seatback assist straps were also Medici cloth. Bodyside moldings held vinyl inserts that matched the body color. The Coupe DeVille Cabriolet roof option came in 13 coordinated colors, with a Cadillac crest on the sail panel and bright roof moldings.


Model No. Style Number Body Type Seating Factory Price Shipping Weight Production Total
6C D47 2-door Coupe 6 $9654 4186 138,750
6C D69 4-door Sedan 6 $9864 4222 95,421


Feature Base Engine Optional Engine
Type 90-degree, overhead valve V-8. Cast iron block and head
Displacement 425 cu in. (7.0 liters)
Bore & stroke 4.082 x 4.06 in.
Compression ratio 8.2:1
Brake horsepower 180 @ 4000 rpm 195 @ 3800 rpm
Torque 320 lbs.-ft. @ 2000 rpm 320 lbs.-ft. @ 2400 rpm
Main bearings Five
valve lifters Hydraulic
Fuel supply 4 Bbl. Carburetor Electronic fuel-injection
VIN Code S T


Wheelbase 121.5
Overall length 221.2″
Height 54.4″ (coupe); 55.3″ (sedan
Width 74.6″
Front Tread 61.7″
Rear Tread 60.7″
Standard tire GR78 x 15-8 SBR wide WSW


Transmission Turbo Hydra-matic transmission standard on all models; column shift
Gear ratios (1st) 2.48:1; (2nd) 1.48:1; (3rd) 1.00:1; (Rev) 2.07:1
Standard axle (final drive) ratio 2.28:1, with 3.08:1 optional
Hypoid rear axle Salisbury type
Steering variable-ratio, power assisted
Front suspension independent coil spring, link-type stabilizer
Rear Suspension four-link drive, coil springs
Automatic level control not standard
Body construction ladder type frame
Brakes front disc, rear drum
Ignition HEI electronic ignition
Fuel tank 24 gal.


Fuel-injected V-8 engine $702
Heavy-duty cooling system $43
80-amp alternator $47
California emission equipment $70
Limited slip differential $61
High altitude pkg. $22
Trailering pkg.: $90
Automatic level control: $100


Coupe DeVille Cabriolet $348
Coupe DeVille w/Astroroof $1365
Coupe DeVille w/sunroof $1169
DeVille d’Elegance $650


Astroroof for full vinyl roof $938
Astroroof (painted $1043
Sunroof for full vinyl roof $742
Sunroof (painted roof): $846
Cruise control $111
Controlled-cycle wipers $30
Rear defogger, grid-type $83
Six-way dual comfort power seat adjuster, passenger $107-$138
Power passenger 50/50 seat with six-way adjuster $197-$248
Driver’s 50/50 seat recliner $110
Power passenger seatback recliner, notchback seat: $110
Tilt/telescope steering wheel $109
Automatic door locks $101
Illuminated entry system $56
Fuel monitor $28
Theft deterrent system $123
Trunk lid release and power pull-down $61-$73
Opera lamps DeV: $60
Twilight Sentinel $51
Guidematic headlamp control $58
Trumpet horn $20
Remote-control right mirror $32
Lighted thermometer on left mirror $26
Lighted vanity mirror $47
AM/FM stereo radio w/tape player $254
AM/FM stereo radio w/digital display $254
AM/FM stereo radio w/CB $386
Signal-seeking/scan AM/FM stereo radio $156
Firemist paint $153
Vinyl roof: $179
Bumper $8
Accent stripes $45
Door edge guards $8-$12
License frame each: $7
Dual Comfort 50/50 front seats: $187
Leather seats $235-$252
Twin floor mats $13-$28
Trunk mat $10
Turbine-vaned wheel covers $49
Wire wheel covers: $176