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

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1946 Buick 70 Roadmaster Series
Sedan
Standard Specifications
  Show Summary  
Original Base Price $2,110.00
No. Produced 20,864
Body Maker Fisher
No. Doors 4
Passengers 6
Model Number 71
Weight 4,135lbs
Wheelbase 129 inches
Length 217.125 inches
Width
Height
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 4558297-7
Engine No. Location Boss on right side of crankcase below push rod cover.
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 Independent 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 7 Quarts
Transmission 2.5 Pints
Cooling System 16.75 Quarts
Rear Differential 3 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 On plate on right side of cowl under hood.
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Additional Information
Serial Nos. 1-4364445 & up, 2-4380001 & up, 3-439001 & up.

1946 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
Paint Type
Colors Two Tone Colors Available
Nightshade Blue
Canterbury Blue
Verde Green
Sherwood Green
Brunswick Green
Carlsbad Black
Royal Maroon
Dusty Gray
Rivermist Gray
Lehigh Gray
Sequoia Cream
Standard/Optional Equipment
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