Specifications, Part & Services, Museums & Clubs for Antique, Classic, Vintage and Muscle Cars

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1955 Buick Roadmaster Series 70
Convertible Coupe
Standard Specifications
  Show Details  
Original Base Price $3,234.00
No. Produced 4,739
Body Maker Fisher
No. Doors 2
Passengers 6
Model Number 76C
Weight 4,415lbs
Wheelbase 127 inches
Length 216 inches
Width 80 inches
Height 64.3 inches
Front Tread 59 inches
Rear Tread 62.2 inches
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Type V8, Valve-in-head
Displacement 322 cu. in.
Cylinders 8
Bore & Stroke 4 & 3 13/64 inches
Compression Ratio-Std 9.0 to 1
Compression Ratio-Opt Not applicable
Brake Horsepower 236@4600
Rated Horsepower 51.20
Torque 330@3000
Type Downdraft 4-barrel
Make Carter or Rochester
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Type Dynaflow automatic
Drive Rear wheel drive
No. Of Gears 4
Not applicable
Clutch Size
Semifloating
Hypoid
Differential Ratio 3.40 to 1
Front Independent coil springs
Rear Coil springs
Power hydraulic
Service 4 wheel hydraulic drum
Front Size 12 inches
Rear Size 12 inches
Emergency Rear service brakes
Size 12 inches
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Not Rated
VIN/Serial no. See Additional Information
VIN Description Total Digits: 9
Digits 1: Series
Digits 2: Model year
Digits 3: Assembly plant
Digits 4-9: Production number
VIN Location Plate on left front door pillar & stamped on left front frame crossmember extension.
General VIN Decoder

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Additional Information
Serial Nos. 7B1001001 to 7B1244927, 7B2001001 to 7B2087498, 7B3001001 to 7B3093179, 7B4001001 to 7B4094934, 7B5001001 to 7B5068578, 7B6001001 to 7B6070979, 7B7001001 to 7B7037771, 7B8001001 to 7B8049469.

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