Deville Cadillac Moels & History 1983

Few changes were evident in the bodies of DeVille or Fleetwood coupe and sedan models, though underneath the exhaust system was modified. The refined new grille was similar to 1982 with narrow vertical bars separated into three rows, but Cadillac script moved from the upper horizontal bar to the side of the grille itself, leaving that upper bar bare. Distinctive taillamps carried on Cadillac’s traditional style. On the hood was a stand-up hood ornament; on the decklid, Cadillac’s “V” and crest. Lengths reached as long as 221 inches, while prices began at $15,970. Horsepower rose by 10 on the HT-4100 Digital Fuel Injected 4.1 liter V-8. The miserly (if troublesome) 5.7-liter diesel was available on DeVille and Fleetwood Brougham models. Standard interior was Heather knit cloth with matching Dundee ribbed cloth inserts. Saddle leather was also available. DeVille d’Elegance offered pillow-style seating in Venetian velour, a six-way power passenger seat, special trim, accent striping, and opera lamps. The Cabriolet version of Coupe DeVille added an Elk Grain vinyl partial roof, in color to match the car body, with bright crossover roof molding.


Model Series Number Body/Style Number Body Type Seating Factory Price Shipping Weight Production Total
DeVille (V-8) 6C D47 2-dr Coupe 6 P $15,970 3935 lb 65,670 (total includes the 2-door Fleetwood Brougham)
DeVille (V-8) 6C D69 4-dr Sedan 6 P $16,441 3993 lb 109,004 (total included the 4-door Fleetwood Brougham)


Feature Basic Gas Engine Optional Diesel Engine
Type 90-degree, overhead-valve V-8. Iron/aluminum alloy block; cast iron head. 90-degree, overhead valve V-8. Cast iron block and head.
Displacement 249 cu. in. (4.1 liters) 350 cu. in. (5.7 liters)
Bore & stroke 3.47 x 3.31 in. 4.057 x 3.385 in.
Compression ratio 8.5:1 22.5:1
Brake horsepower 135 at 4400 R.P.M. 105 at 3200 R.P.M.
Torque 200 lbs.-ft. at 2200 R.P.M. 200 lbs.-ft. at 1600 R.P.M.
Main bearings Five Five
Valve lifters Hydraulic Hydraulic
Fuel supply Digital fuel injection Fuel Injection
Manufacturer Cadillac HT-4100 Oldsmobile
VIN Code 8 N


Wheelbase 121.4 in.
Overall length 221.0 in.
Height (Coupe 54.6 in.
Height (Sedan 55.5 in.
Width 76.4 in. max.
Front Tread 61.7 in.
Rear Tread 60.7 in.
Standard Tires P215/75R15 SBR wide WSW


Transmission Four-speed overdrive automatic
Gear ratios (1st) 2.74:1; (2nd) 1.57: 1; (3rd) 1.00:1; (4th) 0.67:1; (Rev) 2.07:1
Standard final drive ratio 3.42:1 except with diesel 2.93:1
Steering recirculating ball; power assist
Front suspension coil springs and link stabilizer bar
Rear suspension four-link, coil springs, elect. level control available on DeVille
Brakes front disc, rear drum
Fuel tank 24.5 gal. except with diesel, 26 gal.


5.7-liter diesel V-8 engine NC
California emission equipment $75
California emission equipment (diesel $215
100-amp alternator $50
Electronic level control (DeVille) $203
Heavy-duty ride pkg.(DeVille) $319


DeVille d’Elegance $1150
Cabriolet roof DeVille coupe $415


Astroroof $1225
Electronic cruise control $185
Controlled-cycle wiper system: $60
Rear defogger with heated outside mirrors $160-$210
Automatic door locks $157
Remote-locking fuel filler door $59
Garage door opener $140
Illuminated entry system $76
Dual comfort front seats: $225
Memory driver’s seat $185
Six-way power passenger seat: $210
Power driver’s seat recliner $155
Power passenger seat recliner: $155
Power passenger seat recliner with six-way power seat: $365
Leather-trimmed steering wheel $99
Tilt/telescope steering wheel $179
Power trunk lid release and pull-down: $120
Theft deterrent system $185
Twilight Sentinel $79
Guidematic headlamp control $93
Opera lamps: $88
Trumpet horn $38
Electric remote-control outside mirrors $99
Twin lighted vanity mirrors $140
Electronic-tuning seek/scan AM/FM stereo radio with 8-track or cassette tape player $299
Electronic-tuning seek/scan AM/FM stereo radio with cassette and CB $577
Extended-range rear speakers (with standard radio) $25
Triband antenna $50
Full padded vinyl roof (sedan) $280
Two-tone paint: $345
Two-tone Firemist paint, $465
Firemist paint $235
Accent striping: $77
Door edge guards $19-$29
License frames, each $14
Leather seating area $515-$680
Carpeted front rubber floor mats $43-$45
Carpeted rear rubber floor mats $25
Trunk mat $21
Locking wire wheels $860
Turbine vaned wheel covers: $77
Locking wire wheel covers $310-$389
Puncture-sealing tires $135-$180