Buick Century Custom specs: 1975-1977

The Buick Century Custom replaced the Buick Century Luxus for model year 1975. The Custom was more luxurious than the base model, including nicer wheels, plus the coupes received the formal roof-line as opposed to the base models, which got fastback styling. For 1976, the Century lineup received a new nose, but the coupes spun off in their own direction looking nothing like the sedan or station wagon.

Platform: A-body

Trim Levels: base/Custom, though Century Custom is already a step above the base Century

Body Styles:

formal coupe (1975 only)- This was the only year they looked like the sedans/wagons.

formal sun coupe (1975 only)

sedan (1975-1977)

station wagon (1975-1977)

Wheelbase:

112.0″ (coupe)

116.0″ (sedan/wagon)

F/R Track Width: 61.5″/60.7″

Overall Length:

209.5″ (coupe)

213.5″ (sedan)

218.2″ (wagon)

Overall Width: 79.0″

Overall Height: 53.5″

Turning Circle: not published

Drag Coefficient: not published

Curb Weight: 3850-4250 lbs.

Available Engines:

231 CID 2bbl V6 (1975 coupes only)

350 CID 2bbl V8 (1975 only)

350 CID 4bbl V8 (1973-1977 all)

403 CID 4bbl Olds V8 (1977 wagons only)

455 CID 2bbl V8 (1975 wagons only)

455 CID 4bbl single exhaust V8 (1975-1976 wagons only)

Available Transmissions:

3-SPEED MUNCIE MANUAL (1975 V6 only)

3-SPEED TH350 AUTOMATIC (1975-1977 231/350 cars)

3-SPEED TH400 AUTOMATIC (1975-1977 403/455 cars)

Axle Ratio:

2.41

2.56

2.73

3.08

Fuel Capacity: 22.0 Gallons

Fuel Economy: not published

Head Room F/R:

37.5″/37.4″ (coupe)

38.3″/37.5″ (sedan/wagon)

Leg Room F/R:

42.4″/32.9″ (coupe)

42.4″/37.0″ (sedan/wagon)

Shoulder Room F/R:

58.8″/58.1″ (coupe)

59.6″/58.9″ (sedan/wagon)

Hip Room F/R:

54.9″/52.7″ (coupe)

54.7″/57.7″ (sedan/wagon)

Tires:

GR70-15

GR78-15

HR78-15

Wheels:

15.0″ x 6.0″

15.0″ x 7.0″