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1951 Buick Special Series 40
Riviera Sedan
Standard Specifications
  Show Summary  
Original Base Price $1,885.00
No. Produced 16,491
Body Maker Fisher
No. Doors 2
Passengers 6
Model Number 45R
Weight
Wheelbase 121.5 inches
Length 204 13/16 inches
Width 76 11/16 inches
Height 63 13/32 inches
Front Tread 59 3/32 inches
Rear Tread 59 inches
Type Inline, Valve-in-head
Displacement 263.3 cu. in.
Cylinders 8
Bore & Stroke 3 3/16 & 4 1/8 inches
Compression Ratio-Std 6.6 to 1
Compression Ratio-Opt
Brake Horsepower 120@3600
Rated Horsepower 32.5
Torque 212@2000
Main Bearings 5
Valve Lifters Mechanical
Block Material
Engine Numbers Starting 6240100-4
Engine No. Location Boss on right side of crankcase near front.
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 2.67 to 1
2nd 1.66 to 1
3rd 1 to 1
4th Not applicable
5th Not applicable
Reverse 3.02 to 1
Single plate dry disc
Clutch Size 10 inches
Semifloating
Hypoid
Differential Ratio 3.90 to 1
Front Coil springs
Rear Coil springs
Ball bearing, worm & nut
Service Hydraulic drum
Front Size 12 inches
Rear Size 12 inches
Emergency 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 15 x 6
Tire Type 4 ply
Tire Size 7.6 x 15
Spare Location Trunk
Fuel 19 Gallons
Oil 6.5 Quarts
Transmission 1.75 Pints
Cooling System 12 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 on left front door pillar & stamped on left front frame crossmember extension.
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Additional Information
Serial Nos. 1-6031301 & up, 2-6050001 & up, 3-6055001 & up, 4-6061001 & up, 5-607001 & up, 6-6075001 & up, 7-6080001 & up.

Engineering Data - Buick Motor Division (1951)Detroit Public Library (Nat'l Auto. Hist. Collctn)
5201 Woodward
Detroit MI 48202
(313) 833-1456
www.detroit.lib.mi.us/nahc/index.htm
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 December 1945Los Angeles Public Library
630 West Fifth Street
Los Angeles CA 90071
(213) 228-7000
www.lapl.org
Motor Age January 1951Horseless Carriage Foundation
Paint Type
Colors Two Tone Colors Available
Barton Gray
Victoria Maroon Poly.
Sharon Green Poly.
Cloudmist Gray Poly.
Carlsbad Black
Verde Green
Imperial Blue Poly.
Geneva Green Poly.
Olympic Blue Poly.
Old Ivory
CaluMetallic Green Poly.
Venetian Blue Poly.
Galena Blue Poly.
Glenn Green
Standard/Optional Equipment
Dynaflow automatic transmissionOpt
Power windowsStd
Power seatsStd
RadioOpt
Heater and DefrosterOpt
Rear Axle RatioOpt
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