Eldorado Cadillac History 1984

Eldorado Cadillac Moels & History 1984

For the first time since the famed ’76 Eldorado ragtop, Cadillac offered a convertible: the new and posh Biarritz. Its rear side windows raised and lowered automatically with the power top, and it contained a glass back window. Convertible bodies came in three colors: Cotillion White, Hatteras Blue, and Autumn Maple Firemist. Each had a white diamond-grain vinyl top, glass rear window, and color-coordinated headliner. Reinforced frame rails and crossmember braces and a bolstered body structure added the necessary strength and rigidity.

1984 Eldorado

Convertibles had the following:

  • specific wide bright door and fender accent moldings;
  • decklid accent striping;
  • Biarritz script nameplate;
  • wire wheel covers
  • special Biarritz multi-button tufted seat design
  • leather-wrapped steering wheel rim
  • plus Cadillac’s theft deterrent system

1984 Eldorado

The revived Biarritz convertible carried a hefty opening price tag: $31,286. That was nearly triple the cost of a ’76 Eldorado ragtop when it was new.

Eldorado coupes started at a more modest $20,342. Eldorado’s grille this year was vertically accented with a bright Cadillac script nameplate in the lower left corner. Rectangular headlamps sat above clear park/signal lamps. Appearance changes included the following: new car-colored bodyside moldings, new low-gloss black door trim bezels, instrument panel bezels, and air conditioning outlets. Base Eldorados had a new leather seat trim design. Other additions:

  • an improved theft-prevention system,
  • new dashboard bezels,
  • suspension refinements,
  • improved stereo performance,
  • a new glow-plug system in the optional diesel V-8 engine

The coupes had a cabriolet vinyl top with glass rear window, brushed stainless steel roof cover, and opera lamps. Extended-range rear speakers became standard, except on the Delco/Bose sound system.

1984 Eldorado

The standard 4.1-liter V-8 engine added a new exhaust system, while the Oldsmobile diesel was not offered in convertibles (or in California). The Touring Coupe was again available, with a distinctive “Eldorado Touring Coupe” cloisonne hood surface and sail panel ornaments. Also included:

  • black-finished windshield window reveal moldings quarter window channel moldings and wipers
  • body-colored headlamp and taillamp bezels and wheel opening moldings
  • large ribbed rocker panel moldings
  • aluminum alloy wheels

Touring Coupes came only in Sable Black or Sonora Saddle Firemist.


Model Series Number Body/Style Number Body Type Seating Factory Price Shipping Weight Production Total
Eldorado (V-8) 6E L57 2-dr Coupe 6 P $20,342 3748 lb 74,506
Eldorado (V-8) 6E L67 2-dr Convertible 6 P $31,286 N/A 3300


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


1984 Eldorado

Wheelbase 114.0 in.
Overall length 205.4 in.
Height 54.3 in.
Width 70.6 in.
Front Tread 59.3 in.
Rear Tread 60.6 in.
Standard Tires P205/75R15 SBR wide WSW


Transmission Four-speed overdrive automatic (THM325-4L
Ratios (1st) 2.74:1; (2nd) 1.57:1; (3rd) 1.00:1; (4th) 0.667:1; (Rev) 2.07:1.
Standard final drive ratio 3.15:1 except diesel, 2.93:1
Steering recirculating ball; power assist
Front suspension torsion bar and link stabilizer bar
Rear suspension independent trailing arm, coil springs, electronic level control
Brakes four-wheel disc
Fuel tank 20.3 gal. exc. 22.8 w/diesel


5.7-liter diesel V 8 engine NC
California emission equipment $99
Engine block heater $18-$45
Heavy-duty battery $40
100-amp Alternator $50
FE2 touring suspension $115


Cabriolet roof – Eldorado coupe $420
Full cabriolet roof – Eldorado $995
Eldorado Biarritz $3395
Eldorado Touring Coupe $1975


Astroroof $1225
Electronic cruise control $185
Rear defogger w/heated outside mirrors $165-$215
Automatic door locks $162
Remote-locking fuel filler door $59
Garage door opener (except convertible) $140
Illuminated entry system $76
Digital instrument cluster $238
Memory driver’s seat $205
Six-way passenger seat $215-$225
Power driver’s seat recliner $115
Power passenger seat recliner w/six-way power seat $315-$380
Leather-trimmed steering wheel $99
Tilt/telescope steering wheel $184
Theft deterrent system $190
Twilight Sentinel $79
Guidematic headlamp control $93
Opera lamps $88
Trumpet horn $38
Electric remote-control outside mirrors $101
Twin lighted vanity mirrors $140
Electronic-tuning seek/scan AM/FM stereo radio with clock and cassette player $229
Electronic-tuning seek/scan AM/FM stereo radio with cassette and Delco-GM/Bose sound system, $895
Electronic-tuning seek/scan AM/FM stereo radio with CB radio $278
Triband antenna $50
Two-tone paint $345
Two-tone paint (Firemist) $465
Firemist paint $235
Bodyside molding (Eldorado Touring coupe) $64
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
Aluminum wheels $429
Locking wire wheel covers $315-$394
White-letter tires (Eldorado touring coupe) $100
Puncture-sealing tires $135-$180