Fleetwood 75 Cadillac History 1963

Fleetwood 75 Cadillac Models & History 1963

Cadillac’sextra-long nine-passenger cars (Series 6700) were the only pillared four-door sedans in the line. Standard equipment was the same as on base 6300 models and Series 62 convertibles. Trimmings included a full-length lower beltline molding of a simple, but elegant design. Convertible top-look rooflines and windshields with forward “dog leg” style pillars were 1962 carry-overs seen exclusively on this line.


Model No. Style No. Body Type Seat Factory Price Shipping Weight Production Total
63-67R 6723R

4-door Sedan

9 $9724 2382 kg 680
63-67S 6733S

4-door Limousine

9 $9939 2409 kg 795
63-68 6890 Commercial chassis 2,527

NOTE: The commercial chassis featured a 3962mm wheelbase and was provided to professional car makers for construction of funeral cars, ambulances, etc.


  • Motor serial numbers took the same form used in 1962
    • the first pair of symbols changed to “63” to indicate 1963 model year
    • the next symbol was a letter to indicate the model as listed below
    • the next six numbers indicated the consecutive unit number beginning with 000001
  • The serial number was located at the front of the lefthand frame side bar
  • Motor serial numbers again matched and were found on the center lefthand side of the block above the oil pan
  • The alphabetical body identification code “C” was no longer used, since the short-deck Town Sedan was dropped from the 62 Series
  • However, the short-deck 6300 model, called the Sedan DeVille Park Avenue, was retained and used the same “D” body identification symbol
  • Rooflines on two-door hardtops were restyled, which brought a change in body style coding, but not in the alphabetical suffix


Type V-8
Valves Overhead valves
Block Cast iron block
Displacement 6.384 Liters
Bore and stroke 101.6mm x 98.4mm
Compression ratio 10.5:1
Horsepower 325 hp @ 4800 rpm
Power 242 kW @ 4800 rpm
Bearings Five main bearings
Valve Lifters Hydraulic valve lifters
Carburetion Rochester four-barrel model 710930


  • Although neither engine displacement or output changed, the 1963 Cadillac V-8 was completely redesigned.
  • Quieter, smoother and more efficient, the new motor was 25mm lower, 100mm narrower and 32mm shorter than the 1962 V-8.
  • It was also some 37 kg lighter, due to the use of aluminum accessory drives.


Wheelbase 3805mm
Overall Length 6180mm
Tires 8.20 x 15
Rear axle ratio 3.36:1


Air conditioner for Series 75 $624
Automatic headlight control $45
Controlled differential $54
Cruise Control $97
Door guards $7
Electric door locks $70
E-Z-Eye Glass $52
Leather upholstery for style 6039M $134
License plate frame $6
Padded roof for style 6039M $134
Six-way power seat $85 or $113 depending on body style
Power window regulators as an option $118
Power ventipanes as an option $73
Radio with rear seat speaker $165
Radio with rear seat speaker and remote control $247
AM/FM radio $191
Adjustable steering wheel $48
Remote control trunk lock $53
Five white sidewall tires, 8.20 x 15 four-ply on Series 60 $57 exchange
Five white sidewall tires, 8.20 x 15 six-ply on Series 75 models $64 exchange