Eldorado Cadillac Models & History 1977

Unlike the other full-size Caddies, Eldorado continued in its previous form (and elephantine size). A brushed chrome molding reached across the new coordinated horizontal-style grille and headlamps. This year’s grille pattern featured more thin vertical bars than before and stood on a line with the headlamp tops. Individual “Eldorado” block letters sat on the hood front, above the grille. Rear fenders held new rectangular side marker lamps, while new vertical taillamps formed into the bumper tips. Power four-wheel disc brakes had cooling fins. In the modified automatic climate control, the compressor ran only when needed. The $1760 Biarritz option (introduced during the 1976 model year) included a special fully-padded Elk Grain cabriolet roof, formal quarter and rear windows with French seams, and opera lamps. A matching vinyl insert accented the aluminum crossover roof molding. Stripes highlighted front fenders, doors and rear quarter panels. A script nameplate stood to the rear of quarter windows. Black-accented moldings ran from the hood front all the way back and around the roof. Sierra Grain leather covered contoured pillow seats.

1977 Cadillac Eldorado


Model No. Style Number Body Type Seating Factory Price Shipping Weight Production Total
6E L47 2-door Coupe 6 $11,187 4955 47,344


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 126.3″
Overall length 224.0″
Height 54.2″
Width 79.8″
Front Tread 63.7″
Rear Tread 63.6″


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
Rear Axle Spiral Bevel rear axle
Steering variable-ratio, power assisted
Front suspension upper/lower control arms, torsion bars
Rear suspension four-link drive, coil springs
Automatic level control Standard
Body construction separate body and perimeter frame.
Brakes four-wheel disc
Ignition HEI electronic ignition
Fuel tank 27.5 gal.


Fuel-injected V-8 engine $702
Heavy-duty cooling system $43
80-amp alternator $47
California emission equipment $70
Limited slip differential N/A on Eldorado
High altitude pkg. $22
Trailering pkg. $90


Eldorado Cabriolet $457
Eldorado Cabriolet w/Astroroof $1474
Eldorado Cabriolet w/sunroof $1278
Eldorado Custom Biarritz $1760
Eldorado Custom Biarritz w/Astroroof $2777
Eldorado Custom Biarritz w/sunroof $2581


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
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
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 $100
AM/FM stereo radio w/CB $230
Signal-seeking/scan AM/FM stereo radio $156
Firemist paint $153
Vinyl roof $186
Door edge guards $8-$12
License frame each: $7
Dual Comfort 50/50 front seats $187
Leather seats $235-$252
Two-tone 50/50 dual comfort front seats $471
Floor mats, one-piece front: $31; rear: $19
Trunk mat $10