Cadillac Fleetwood Models & History 1978


The most noticeable difference in appearance between the Brougham and the less costly DeVille sedan lay in Brougham’s distinctively tapered pillar design between front and rear doors. Brougham also stopped itself with four-wheel disc brakes. New this year were the restyled grille and back bumper, plus a weight-saving aluminum hood. Front seats now had seatback pockets. Brushed chrome moldings held new wreath-and-crest ornamentation. The Elk Grain vinyl roof held opera lamps just behind the back doors. Color-coordinated wheel discs repeated the body color in the center. Door-pull handles were new, and the door armrest hold six-way power driver’s seat controls. Brougham interiors held individual reading lamps. The Florentine velour interior was offered in mulberry, light gray, black, light blue, dark green, yellow, or light beige. Leather interiors came in eleven colors.

Standard engine was the 425 cu. in. (7.0-liter) V-8. Oversized steel-belted radials rode match-mounted wheels. New standard equipment included electronic leveling control. Joining the option list were seven new interior colors, rear deck accent stripes, color-keyed bodyside moldings, and chrome accent moldings. Available chromed wire wheels showed the Cadillac insignia on a hexagonal center hub. An electronic-tuning stereo radio with digital readout was available with 8-track tape player. The familiar Astroroof was available too. Brougham d’Elegance added contoured pillow-styled seats trimmed in Florentine velour (in five Antique colors), with velour trim in doors, pull straps, and seatback assist straps. Medium Saddle leather was also available on the 50/50 Dual Comfort front seats. Plush pile carpeting reached up onto the lower doors, and covered front and rear floormats. A “Brougham d’Elegance” insignia was on the glove box door; another outside. Also included: three above-door passenger assist grips, accent stripes, and available turbine-vaned wheel discs.


The twin posh “Flagships of the Cadillac fleet” carried styling alterations similar to the “lesser” Fleetwoods. New electronic leveling control was standard. Six-way power driver’s seat controls were now in the door armrest. Standard limos sat eight. The seven-passenger Formal Limousine had a standard divided 45/45 front seat with black leather seating, plus a sliding glass partition. Both models had two additional fold-down seats. Florentine velour upholstery was offered in light gray, black, or dark blue. The Automatic Climate Control System could be operated by driver or passengers. A Dual Accessory Control Panel also let passengers operate the power windows — a logical decision, to be sure. A padded Elk Grain vinyl roof was standard. Not quite as many Formal limos were built as the standard variety. Chrome landau bars were available by special order. So were a full landau roof or cabriolet roof, both in padded Elk Grain vinyl. The landau option offered closed-in rear quarters and a smaller back window. as well as opera lamps.

Model Number Style Number Body Type Seating Factory Price Shipping Weight Production Total
6C B69 4-door Sedan 6 $12,292 4314 36,800
6D F23 4-door Sedan 8 $19,642 4772 848
6D F33 4-door Formal Limousine 7 $20,363 4858 682
6D Z90 Commercial Chassis N/A N/A 852




Feature Base engine Optional fuel injected engine (not available on Limousine Optional diesel engine
Type 90-degree, overhead valve V-8. Cast iron block and head
Displacement 425 cu. in. (7.0 liters) 350 cu. in. (5.7 liters)
Bore & stroke 4.082x 4.06 in. 4.057 x 3.385 in.
Compression ratio 8.2:1 22.5:1
Brake horsepower 180 @ 4000 rpm 195 @ 3800 rpm 120 @ 3600 rpm
Torque 320 lbs.-ft. @ 2000 rpm 320 @ 2400 rpm 220 lbs.-ft. @ 1600 rpm
Main bearings Five
Valve lifters Hydraulic
Fuel supply 4 Bbl. carburetor electronic fuel injection Electronic fuel injection
VIN Code S T N




Feature Brougham Limousine
Wheelbase 121.5″ 144.5″
Overall length 221.2″ 244.2″
Height 56.7″ 56.9″
Width 76.4″ 74.6″
Front Tread 61.6″ 61.7″
Rear Tread 60.7″ 60.7″
Standard tires HR78 x 15-B wide WSW HR78 x 15-D wide WSW




  • 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.
  • Brougham Standard axle ratio: 2.28:1, with 3.08:1 available
  • Limo Standard axle ratio: 3.08:1
  • Hypoid rear axle
  • Steering: variable-ratio, power assisted
  • Front suspension: independent coil spring, link-type stabilizer
  • Rear Suspension: four-link drive, coil springs
  • Limo Brakes: front disc, rear drum
  • Brougham Brakes: four-wheel disc
  • HEI electronic ignition.
  • Fuel tank: 25.3 gal.


  • Fuel-iniected V-8 engine for Brougham ($744)
  • Heavy-duty cooling system ($41)
  • 80-amp alternator ($51)
  • Engine block heater ($20)
  • California emission equipment ($75)
  • Limited slip differential ($67)
  • High altitude pkg. ($33)


  • Brougham d’Elegance: cloth ($938); leather ($1270)


  • Astroroof w/full vinyl roof for Brougham ($995)
  • Sunroof w/full vinyl roof for Brougham ($795)
  • Cruise control ($122)
  • Controlled-cycle wipers ($32)
  • Rear defogger, grid-type ($94)
  • Six-way Dual Comfort power passenger seat adjuster $118-$150)
  • Power 50/50 seat recliner ($116)
  • Power 50/50 passenger seat recliner ($210-$262)
  • Tilt/telescope steering wheel ($121)
  • Automatic door locks ($114)
  • Illuminated entry system ($59)
  • Fuel monitor ($29)
  • Theft deterrent system ($130)
  • Trunk lid release and power pull-down ($80)
  • Twilight Sentinel ($54)
  • Guidematic headiamp control ($62)
  • Trumpet horn ($21)
  • Remote-control right mirror ($34)
  • Lighted thermometer on left mirror ($27)
  • Lighted vanity mirror, passenger ($50)
  • AM/FM stereo radio with digital display; ($106)
  • AM/FM stereo radio with digital display w/tape player ($106)
  • AM/FM stereo radio with digital display w/CB ($281)
  • AM/FM stereo radio with digital display w/tape and CB ($427)
  • Seek/scan AM/FM stereo radio with tape player and digital display for Brougham ($225)
  • Seek/scan AM/FM stereo radio w/rear control for Limo ($203)
  • Firemist paint ($163)
  • Front bumper reinforcement ($9)
  • Chrome accent molding for Brougham ($85-$100)
  • Accent stripes for Brougham ($53)
  • Door edge guards ($ll-$18)
  • License frame: each ($9)
  • Leather seating area ($295-$315)
  • Carpeted rubber front floor mats ($31-$34); rear ($15-$21)
  • Trunk mat ($12)
  • Turbine-vaned wheel covers ($54)
  • Locking wire wheels ($541-$595)
  • Locking wire wheel covers ($179-$233)
  • Stowaway spare tire for limo (No Charge)