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Buick
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Model
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Roadmaster
1951 Buick Roadmaster Riviera
United States
Gasoline
RWD
Sedan
Updated Aug 24, 2026
Image coming soon
Specifications
Vehicle Details
Powertrain
Dimensions
Engine & Performance
Dimensions & Weight
Exterior
Interior
Other
Vehicle Details
Year
1951
Make
Buick
Model
Roadmaster
Variant
Riviera
Body Style
Sedan
Generation
5th Generation 1st Facelift
Seats
6
Doors
4
Fuel
Gasoline
Drivetrain
RWD
Transmission
Automatic, 2-speed
Powertrain
Engine Name
5.2 Automatic
Engine Configuration
Inline
Power (hp)
154 hp
Power (kW)
113 kW
Torque
380 Nm (280 lb-ft)
Displacement
5,247 cc
Dimensions
Length
5,461 mm
(215.0 in)
Width
2,032 mm
(80.0 in)
Height
1,656 mm
(65.2 in)
Wheelbase
3,308 mm
(130.2 in)
Curb weight
1,944 kg
(4,286 lb)
Engine & Performance
Engine
Engine Specification
Rev. at Max Power
3,600 rpm
Rev. at Max Torque
2,000 rpm
Engine Fluids
Mineral Oil (viscosity)
20W-50
Engine Oil, Volume
9 litres
Semi-synthetic Viscosity
10W-40
Engine Configuration
Bore
87.31 mm
(3.4 in)
Stroke
109.54 mm
(4.3 in)
Compression Ratio
7.2 :1
Engine Configuration
Inline
Naturally Aspirated
Yes
Synchronization
Timing Chain
Engine Placement
Front
Engine Mount
Longitudinally
Type of Combustion Engine
Piston
Fuel System
Single (Number of Barrels) Carburator
Transmission & Drivetrain
Transmission
Automatic, 2-speed
Gear Ratio
1st Gear
1.82 :1
2nd Gear
1 :1
Final Drive
3.91 :1
Fuel
General
Tank Volume
72 litres
Brakes
Parking Brake
Manual
Front Brakes
Drum Brakes
Rear Brakes
Drum Brakes
Brakes Material
Cast Iron
Front Brakes
Diameter
304.8 mm
(12.0 in)
Rear Brakes
Diameter
304.8 mm
(12.0 in)
Suspensions
Suspension, Front
Independent
Double Wishbone
Dimensions & Weight
Exterior
Track, Front
1,501 mm
(59.1 in)
Track, Rear
1,580 mm
(62.2 in)
Overhang, Front
869 mm
(34.2 in)
Overhang, Rear
1,283 mm
(50.5 in)
Turning Circle
13.1 m
Ground Clearance
185 mm
(7.3 in)
Interior
Head Room, Front
909 mm
(35.8 in)
Head Room, Rear
884 mm
(34.8 in)
Leg Room, Front
1,125 mm
(44.3 in)
Leg Room, Rear
1,092 mm
(43.0 in)
Exterior
Chassis & Body
Chassis
Chassis
Sedan
Pillars
A-D
Chassis Construction
Body-on-Frame (X-Frame)
Doors
Front Doors
Conventional
Rear Doors
Conventional
Platform
General Motors Platforms
C Platform (RWD)
Equipment
Windows
Window Lifts, Front
Powered
Window Lifts, Rear
Powered
Heated Windows
Optional
Windows › Heated Windows
Front
Optional
Rear
Optional
Other Equipment
Antenna
Optional
Air Intakes
1-port
Number of Exhaust Pipes
1
Lights
Main Beam
Halogen
Low Beam
Halogen
Rear Lights
Halogen
Colour
Finish
Solid
Rims & Tires
Rim Material
Steel
Interior
Equipment
Instrument Cluster
Speedometer
Analogue
Fuel Gauge
Analogue
Odometer Limit
100,000 km/miles
Connectivity
Radio
Optional
Connectivity › Radio
AM
Optional
Speakers
Total Number of Speakers
1 pcs
Interior Storage › Storage Compartments
Glove Compartment
Light
Lights
Read Light
Front
Other Equipment
Driver Side
Optional
Clock
Analogue
Carpets
Yes
Ashtray
Yes
Other Equipment › Carpets
Material
Rubber
Steering Wheel
Material
Plastic
Steering Ratio
23.6 :1
Trunk
Rear Trunk
Yes
Carpet
Rug
Light
Yes
Design
Accent
Chrome
Transmission Knob Material
Plastic
Seats
Colour & Material
Upholstery
Textile
Second Seat Row
Armrest
Yes
Number of Seats
3
Other
Car Classification
American Classification
Full-Size Car
British Classification
Executive Car
Australian Classification
Large Car
European Segment
E-Segment
Car.info Classification
Executive Car
Production
Statistics
Production Number (Generation)
112,275
Buick
1,066 vehicles
Roadmaster
Model
9 variants
€67,000
MSRP · EUR
8.9
Body
Sedan
Variant
Roadmaster Riviera
1949–1957
Roadmaster Riviera Sedan Generations
3 of 8
5th Generation 1st Facelift
1951–1952
Year
1951
Powertrain
5.2 Automatic
Horsepower
154 hp
Drivetrain
RWD
Fuel
Transmission
Automatic, 2-speed
Gasoline
Sedan
RWD
Automatic, 2-speed
Gasoline
