Deville Cadillac History 1985

Deville Cadillac Moels & History 1985

Adramatically different front-drive, C-body Coupe DeVille (and Fleetwood sedan) hit the market late in March of 1984, as early ’85 models. The Grand Old Caddies lost two feet in length and about 600 pounds. Their front-drive chassis layout was also used by Buick Electra and Oldsmobile Ninety-Eight. Though not exactly small, both were a far cry from the DeVilles and Fleetwoods of prior eras. Arriving in the fall was a new Fleetwood coupe, with formal cabriolet vinyl roof and opera lamps, as well as wire wheel covers. Both coupe and sedan carried a claimed six passengers.

A transverse-mounted 249 cu. in. (4.1 liter) V-8 engine with throttle-body fuel injection was standard; 4.3-liter V-6 diesel a no-charge option. Cadillac’s was the only transverse-mounted V-8 available in the world. Oldsmobile’s diesel V-8 engine also was available. Inside the automatic transmission, the torque converter clutch was computer-controlled and operated by silicone fluid.

All models included the Retained power Accessory System, which permitted use of power windows and trunk release for 10 minutes after shutting off the engine. A third brake light was now mounted on the rear panel shelf. Standard equipment included

  • four-speed overdrive automatic transmission
  • power steering and brakes
  • tungsten-halogen headlamps
  • body-colored protective side moldings
  • six-way power driver’s seat
  • power windows and door locks
  • side window defogger
  • electronic climate control
  • a Delco 2000 AM/FM stereo radio with electronic tuning and seek/scan
  • remote-controlled outside mirrors
  • courtesy/reading lamps in the sail panel
  • power decklid release
  • P205/75R14 all-season steel-belted radials


Model Series Number Body/Style Number Body Type Seating Factory Price Shipping Weight Production Total
DeVille (V-8) 6C D47 2-door Coupe 6 $18,355 3330 lb 37,485 (total includes the 2-door Fleetwood)
DeVille (V-8) 6C D69 4-door Sedan 6 $18,947 3327 lb 114,278 (total included the 4-door Fleetwood)

Engine note: Diesel V-6 engines were available on DeVille & Fleetwood models with no extra charge.


Type 90-degree, overhead valve V-8. Cast iron block and head 90-degree, overhead valve V-8. Cast iron block and head
Displacement 249 cu. in. (4.1 liters 262 cu. in. (4.3 liters
Bore & stroke 3.47 x 3.31 in. 4.06 x 3.39 in.
Compression ratio 8.5:1 21.6:1
Brake horsepower 125 at 4200 R.P.M. 85 at 3600 R.P.M.
Torque 190 lbs.-ft. at 2200 R.P.M. 165 lbs.-ft. at 1600 R.P.M.
Main bearings Five Four
Valve lifters Hydraulic Hydraulic
Fuel Supply Fuel Injection Fuel Injection


Wheelbase 110.8 in.
Overall length 195.0 in.
Height 55.0 in.
Width 71.7 in.
Front Tread 60.3 in.
Rear Tread 59.8 in.
Standard Tires P205/75R14 SBR WSW


Transmission Four-speed overdrive automatic (THM440-T4) standard on DeVille/Fleetwood
Gear ratio (1st) 2.92:1; (2nd) 1.57:1; (3rd) 1.00:1; (4th) 0.67:1; (Rev) 2.38:1.
Standard final drive ratio 2.97:1 except with diesel, 3.06:1
Steering rack-and-pinion
Front suspension MacPherson struts, lower control arms, coil springs and stabilizer bar
Rear suspension independent struts, coil springs, stabilizer bar, electronic level control
Brakes front disc, rear drum
Disc dia. 10.25 in.
Drum dia. 8.9 in.
Fuel tank 18.0 gal


4.3-liter diesel V-6 engine NC
California emission equipment $99
Engine block heater $45
Heavy-duty battery $40
FE2 touring pkg. (alum. wheels, P215/65R15 Eagle GT tires, leather-wrapped steering wheel, revised suspension $695


Cabriolet roof (DeVille coupe) $498


Astroroof $1225
Electronic cruise control $185
Controlled-cycle wiper system $60
Rear defogger with heated outside mirrors $165-$215
Automatic door locks $162
Remote-locking fuel filler door $59
Garage door opener $140
Illuminated entry system $76
Dual comfort 55/45 front seats $235
Memory driver’s seat $205-$225
Six-way power passenger seat $225
Power driver’s seatback recliner $155
Power passenger seatback recliner $155
Power passenger seat recliner with six-way power seat $315-$380
Leather-trimmed steering wheel $99
Tilt/telescope steering wheel $184
Power trunk lid release and pull-down $80-$120
Power trunk release only, $40
Theft deterrent system $190
Twilight Sentinel $79
Dimming Sentinel $93-$128
Trumpet horn $38
Electric remote-control outside mirrors $101
Twin lighted vanity mirrors $140
Automatic day/night mirror $80
Electronic-tuning seek/scan AM/FM stereo radio with cassette player $299
Electronic-tuning seek/scan AM/FM stereo radio with cassette and Delco-GM/Bose sound system $895
CB radio $278
Triband antenna $50
Firemist or Pearlmist paint $235
Decklid and bodyside accent striping $52
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 $26
Aluminum wheels $429
Locking wire wheel covers $315-$394
Puncture-sealing tires $135-$180