Deville Cadillac Moels & History 1980

Aerodynamic alterations gave DeVilles a more streamlined profile this year. The new, traditional-style “isolated” grille was made up of narrow vertical bars, peaked forward at the center. A Cadillac script was on the side of the heavy upper header, New flush-mount quad rectangular headlamps stood above new amber-lensed horizontal parking/signal lamps. Matching cornering lamps consisted of a large rectangular lens over a small horizontal one: one followed the line of the headlamps, the other wrapped around in line with the signal lamps.

Wheel openings showed a squared-off, formal look. The rear roof pillar held a Cadillac “V” and crest, plus script nameplate. New wheel covers displayed Cadillac’s crest on a dark red background. DeVilles came in 21 body colors. Both DeVille and Brougham had a stiffer roof profile this year, with a sharpened crease line running the full length of the side. Decklids also had a higher profile, with beveled rear surface. The new roofline added two inches of legroom in the back seat.

Base engine was the 368 cu. in. (6.0-liter) carbureted V-8, with 5.7-liter diesel available. Standard features included

  • a convex remote-control right-hand mirror
  • simulated teak on instrument panel
  • new dual-spot map lamps/courtesy lights.

Durand knit cloth upholstery came in six colors, with Renaissance velour inserts. Leather seating areas came in ten colors. Options included

  • heated side mirrors (available with rear defogger)
  • Astroroof
  • self-sealing tires
  • six radio choices
  • advanced theft-deterrent system.

Coupe DeVille was also offered with a dramatic Cabriolet roof that featured a chrome crossover roof molding. That came in 15 colors of Elk Grain vinyl, with French seam surrounding the back window. DeVille’s D’Elegance had textured Venetian velour upholstery in any of four colors, plus Tampico carpeting, special door pull handles, and “DeVille d’Elegance” script on the glove compartment. The body held accent stripes and another nameplate. Opera lamps were standard on the coupe, three roof-mounted assist straps on the sedan.


Model Series Number Body/Style Number Body Type Seating Factory Price Shipping Weight Production Total
DeVille 6C D47 2-door Coupe 6 $12,401 4048 lb 55,490
DeVille 6C D69 4-door Sedan 6 $12,770 4084 lb 49,188

PRICE NOTE: Cadillac announced a series of price rises during the model year. By summer, DeVille coupe cost $13,115


Feature Base Engine Optional Engine
Type 90-degree, overhead valve V-8. Cast iron block and head 90-degree, overhead valve V-8. Cast iron block and head
Fuel Gasoline Diesel
Displacement 368 cu. in. (6.0 liters) 350 cu. in. (5.7 liters)
Bore & stroke 3.80 x 4.06 in. 4.057 x 3.385 in.
Compression ratio 8.2:1 22.5:1
Brake horsepower 150 @ 3800 rpm 105 @ 3200 rpm
Torque 265 lbs.-ft. @ 1600 rpm 205 lbs.-ft. @ 1600 rpm
Main bearings Five Five
Valve lifters Hydraulic Hydraulic
Fuel Supply 4-Bbl Carburetor Fuel injection
VIN Code 6 N


Wheelbase 121.4 in.
Overall length 221.0 in.
Coupe Height 54.6 in.
Sedan Height 55.6 in.
Width 76.4 in.
Front Tread 61.7 in.
Rear Tread 60.7 in.
Standard Tires P215/75Rl5 SBR wide WSW


Transmission Turbo Hydra-matic transmission standard on all models & column shift.
Gear ratios for DeVille w/V8-368 (1st) 2.48:1; (2nd) 1.48:1; (3rd) 1.00:1; (Rev) 2.07:1.
Standard final drive ratio 2.28:1
Drive Axle Hypoid drive axle.
Steering recirculating ball; power assisted.
Front suspension coil springs and link-type stabilizer bar.
Rear suspension four-link drive coil springs, electronic level control available
Brakes front disc, rear drum
Fuel tank 20.6 gal. (25 gal. available) Unleaded fuel only


5.7-liter diesel V-8 engine $924
Heavy-duty cooling system $59
100-amp alternator $41-$59
Engine block hearer $22
California emission equipment $83-$250
Limited slip differential $86
Heavy-duty suspension $270
Electronic level control $169
Trailering package $100-$118


Coupe DeVille Cabriolet $350
DeVille d’Elegance $1005


Astroroof $1058
Cruise control $147
Controlled-cycle wipers $43
Rear defogger, grid-type $170
Six-way Dual Comfort power passenger seat adjuster $395
Power driver’s seat recliner $130
Notchback passenger seatback recliner $130
Tilt/telescope steering wheel $142
Automatic door locks $129
Illuminated entry system $67
Garage door opener $125
Theft deterrent system $153
Trunk lid release and power pull-down $92
Opera lamps $71
Twilight Sentinel $62
Guidematic headlamp control $72
Front light monitor $35
Trumpet horn $26
Electric remote-control left mirror w/thermometer $97
Lighted thermometer on left mirror $30
Lighted vanity mirrors, pair $112
Electronic-tuning seek/scan AM/FM stereo radio with 8-track tape player $195
Electronic-tuning seek/scan AM/FM stereo radio with 8-track tape player and CB $480
Electronic-tuning seek/scan AM/FM stereo radio with cassette $225
Electronic-tuning seek/scan AM/FM stereo radio with CB $380
Electronic-tuning seek/scan AM/FM stereo radio with cassette and CB $510
Two-tone paint $293
Two-tone paint, partial Firemist $394
Firemist paint $201
Padded vinyl roof $240
Accent stripes $61
Door edge guards $16-$24
License frame each: $11
Leather seating area $435-$595
Carpeted rubber front floor mats $35-$38
Carpeted rubber rear floor mats $19
Trunk mat $15
Turbine-vaned wheel covers $63
Locking wire wheels $755
Locking wire wheel covers $262-$320
Puncture-sealing tires $105