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1973 Buick Regal Series
Colonnade Hardtop Coupe
Standard Specifications
  Show Summary  
Original Base Price $3,412.00
No. Produced 91,557
Body Maker Fisher
No. Doors 2
Passengers
Model Number 4AJ57
Weight
Wheelbase 112 inches
Length 210.7 inches
Width 78 inches
Height 53.5 inches
Front Tread 59 inches
Rear Tread 59 inches
Type V8, valve-in-head
Displacement 350 cu. in.
Cylinders 8
Bore & Stroke 3.8 & 3.85 inches
Compression Ratio-Std 8.5 to 1
Compression Ratio-Opt
Brake Horsepower 150@3800
Rated Horsepower 46.2
Torque 265@2400
Main Bearings 5
Valve Lifters Hydraulic
Block Material Cast alloy iron
Engine Numbers Same as VIN production number sequence.
Engine No. Location Front of right bank of cylinders.
Lubrication Pressure to all bearings excluding wrist pin
Type Dual downdraft
Make Rochester
Type Fully synchronized
Drive Rear wheel drive
No. Of Gears 3
Gear Ratios
1st 2.54 to 1
2nd 1.5
3rd 1 to 1
4th Not applicable
5th Not applicable
Reverse 2.63
Single plate dry disc
Clutch Size 10 2/5 inches
Semifloating
Hypoid
Differential Ratio 3.08 to 1
Front Independent ball joint with coil springs
Rear Coil link
Recirculating ball and nut
Service Front disc, rear self-adjusting drum
Front Size 11 inches
Rear Size 9.5 inches
Emergency Rear service brakes
Size 9.5 inches
Exhaust System Single
Ignition System Distributor and coil
Battery 12 volt storage battery
Cooling System Water pump
Radiator Cross flow
Fuel Type Unleaded
Mileage
Wheel Type
Wheel Mfr
Wheel Size
Tire Type
Tire Size
Spare Location Trunk
Fuel 22 Gallons
Oil 4 Quarts
Transmission 3.4 Pints
Cooling System 15 1/3 Quarts
Rear Differential 2.9 Pints
Front Differential Not applicable
Transfer Case Not applicable
Not Rated
VIN/Serial no. 4J57H3-100001 and up
VIN Description Total Digits: 13
Digits 1: Make
Digits 2: Series
Digits 3-4: Body style
Digits 5: Engine
Digits 6: Model year
Digits 7: Assembly plant
Digits 8-13: Production number
VIN Location On plate on top of left side of dashboard, visible through windshield.
General VIN Decoder

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Additional Information

1973 Buick Service ManualLos Angeles Public Library
630 West Fifth Street
Los Angeles CA 90071
(213) 228-7000
www.lapl.org
1973 Buick Product Selling InformationDetroit Public Library (Nat'l Auto. Hist. Collctn)
5201 Woodward
Detroit MI 48202
(313) 833-1456
www.detroit.lib.mi.us/nahc/index.htm
The Buick - A Complete History by Dunham Gusten & Stf of Auto. QuarterlyHorseless Carriage Foundation
8186 Center St. Suite F P.O. Box 4119
La Mesa CA 91944-4119
(619) 464-0301
www.hcfi.org
Serial No. Book for US Cars 1900-1975 G. BrighamHorseless Carriage Foundation
Automotive Industries April 1 1973Detroit Public Library (Nat'l Auto. Hist. Collctn)
Ward's Automotive Yearbook for 1973Detroit Public Library (Nat'l Auto. Hist. Collctn)
Motor Age April 1973Detroit Public Library (Nat'l Auto. Hist. Collctn)
Paint Type
Colors Regal Black
Arctic White
Medium Blue Metallic
Mediterranean Blue Metallic
Jade Green Metallic
Willow Green Metallic
Autumn Gold Metallic
Colonial Yellow
Harvest Gold Metallic
Silver Cloud Metallic
Burnt Coral Metallic
Midnight Gray Metallic
Brown Metallic
Burgundy Metallic
Bamboo Cream
All colors may not be available in all models.
Standard/Optional Equipment
Turbo Hydramatic automatic transmissionOpt
Power windowsOpt
Air conditioningOpt
Power seatsOpt
RadioOpt
Power antennaOpt
Speed control deviceOpt
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