Cadillac Eldorado History 1963

Cadillac Eldorado Models & History 1963

more distinguished-looking Biarritz arrived for 1963. The lower body “skeg” lines of 1961-62 were erased on all Cadillacs, and wide brushed-finish rocker panel moldings gave the Biarritz closer kinship with the svelte Sixty Special. The price remained stable — a nominal two dollars less than the year before — and production, though still limited, increased significantly.


  • Motor serial numbers took the same form used in 1962, with the first pair of symbols changed to “63” to indicate the new model year.
  • Applicable codes were stamped in the same locations on the cars.


Type V-8
Valves Overhead valves
Block Cast iron block
Displacement 390 cubic inches
Bore and stroke 4.00 x 3.875 inches
Compression ratio 10.5:1
Horsepower 325 @ 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 one-inch lower, four inches narrower and 1-1/4 inches shorter than the 1962 V-8.
  • It was also some 82 pounds lighter, due to the use of aluminum accessory drives.

Model 6367E, the Eldorado Biarritz convertible, had special styling with untrimmed body sides, full-length stainless steel underscores and a rectangular grid pattern rear decorative grille. Power vent windows, white sidewall tires and six-way power seats (in bench seat mode) were standard in Eldorados.


Model Number Style Number Body Type Seating Factory Price Shipping Weight Production Total
63-63E 6367E 2-door Sport Convertible 6 6609 4640 1,825


Wheelbase 129.5 inches
Overall length 223 inches
Tires 8.20 x 15 whitewall
Rear axle ratio 2.94:1


None available.


Air conditioner $474
Automatic headlight control $45
Controlled differential $54
Cruise Control $97
Door guards for $4
Electric door locks $46
E-Z-Eye Glass $52
License plate frame $6
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 standard on Eldorado