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

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1948 Buick Roadmaster Series 70
Sedanet
Standard Specifications
  Show Summary  
Original Base Price $1,968.00
No. Produced 20,649
Body Maker Fisher
No. Doors 2
Passengers 6
Model Number 76S
Weight 4,095lbs
Wheelbase 129 inches
Length 217.125 inches
Width 78.625 inches
Height 65 9/64 inches
Front Tread 59.125 inches
Rear Tread 62 3/16 inches
Type OHV
Displacement 320.2 cu. in.
Cylinders 8
Bore & Stroke 3 7/16 & 4 5/16 inches
Compression Ratio-Std 6.6 to 1
Compression Ratio-Opt
Brake Horsepower 144@3600
Rated Horsepower 37.8
Torque 276@2000
Main Bearings 5
Valve Lifters Mechanical
Block Material
Engine Numbers Starting 4999881-7
Engine No. Location Boss on right side of crankcase near rear.
Lubrication Pressure to all bearings excluding wrist pin
Type Dual downdraft
Make Carter or Stromberg
Type 3-speed manual, helical
Drive Rear wheel drive
No. Of Gears 3
Gear Ratios
1st 2.39 to 1
2nd 1.53 to 1
3rd 1 to 1
4th Not applicable
5th Not applicable
Reverse 2.53 to 1
Single plate dry disc
Clutch Size 10.5 inches
Semifloating
Hypoid
Differential Ratio 4.10 to 1
Front Coil springs
Rear Coil springs
Ball bearing, worm & nut
Service Hydraulic drum
Front Size 12 inches
Rear Size 12 inches
Emergency Internal expanding on rear service brakes
Size 12 inches
Exhaust System Single
Ignition System Distributor and coil
Battery 6 volt storage battery
Cooling System Centrifugal pump with thermostat
Radiator Vee cellular
Fuel Type
Mileage
Wheel Type
Wheel Mfr
Wheel Size
Tire Type
Tire Size 7 x 15
Spare Location Trunk
Fuel 19 Gallons
Oil 8 Quarts
Transmission 2.5 Pints
Cooling System 16.75 Quarts
Rear Differential 4 Pints
Front Differential Not applicable
Transfer Case Not applicable
Not Rated
VIN/Serial no. See Additional Information
VIN Description Total Digits: 8
Digits 1: Assembly plant
Digits 2-8: Production number
VIN Location Plate under hood on right side of dash and plate on left front door pillar.
General VIN Decoder

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Additional Information
Serial Nos. 1-4801266 & up, 2-4820001 & up, 3-4824001 & up, 4-4830001 & up, 6-4830001 & up

1948-1949 Buick Shop ManualLos Angeles Public Library
630 West Fifth Street
Los Angeles CA 90071
(213) 228-7000
www.lapl.org
Serial No. Book for US Cars 1900-1975 G. BrighamHorseless Carriage Foundation
8186 Center St. Suite F P.O. Box 4119
La Mesa CA 91944-4119
(619) 464-0301
www.hcfi.org
Motor Age January 1948Horseless Carriage Foundation
Motor Age November 1947Los Angeles Public Library
Paint Type
Colors Two Tone Colors Available
Verde Green
Royal Maroon
Sequoia Cream
Calvert Blue
Regency Blue
Catalina Gray
Nickel Gray
Honolulu Blue
Aztec Green
Allendale Green
Cumulus Gray
Royal Maroon
Carlsbad Black
Standard/Optional Equipment
Dynaflow automatic transmissionOpt
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