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33 photos
Vehicles
›
Make
›
Buick
›
Model
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Roadmaster
1948 Buick Roadmaster Sedanet
United States
Gasoline
RWD
Coupe
Updated Aug 24, 2026
33 photos
33 photos
Photos
Specifications
Vehicle Details
Powertrain
Dimensions
Engine & Performance
Dimensions & Weight
Exterior
Interior
Safety & Security
Other
Vehicle Details
Year
1948
Make
Buick
Model
Roadmaster
Variant
Sedanet
Body Style
Coupe
Generation
3rd Generation 2nd Facelift
Seats
6
Doors
2
Fuel
Gasoline
Drivetrain
RWD
Transmission
Automatic, 2-speed
Powertrain
Engine Name
Sedanet 5.2 Automatic
Engine Configuration
Inline
Power (hp)
152 hp
Power (kW)
112 kW
Torque
380 Nm (280 lb-ft)
Displacement
5,247 cc
Dimensions
Length
5,517 mm
(217.2 in)
Width
1,996 mm
(78.6 in)
Height
1,656 mm
(65.2 in)
Wheelbase
3,277 mm
(129.0 in)
Curb weight
2,080 kg
(4,586 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
8.5 litres
Semi-synthetic Viscosity
10W-40
Engine Configuration
Bore
87.31 mm
(3.4 in)
Stroke
109.54 mm
(4.3 in)
Compression Ratio
6.9 :1
Engine Configuration
Inline
Naturally Aspirated
Yes
Synchronization
Timing Chain
Engine Placement
Front
Engine Mount
Longitudinally
Type of Combustion Engine
Transmission & Drivetrain
Transmission
Automatic, 2-speed
Gear Ratio
1st Gear
1.82 :1
2nd Gear
1 :1
Final Drive
4.08 :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
Yes
Dimensions & Weight
Exterior
Track, Front
1,505 mm
(59.3 in)
Track, Rear
1,580 mm
(62.2 in)
Turning Circle
12.6 m
Exterior
Chassis & Body
Chassis
Chassis
Coupé
Pillars
A-C
Doors
Front Doors
Conventional
Platform
General Motors Platforms
C Platform (RWD)
Interior
Equipment
Instrument Cluster
Speedometer
Analogue
Fuel Gauge
Analogue
Connectivity
Radio
Optional
Connectivity › Radio
AM
Optional
Speakers
Safety & Security
Brake Systems
Power Brakes
Yes
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
Piston
Fuel System
Carburator
Equipment
Windows
Heated Windows
Optional
Windows › Heated Windows
Front
Optional
Other Equipment
Antenna
Optional
Air Intakes
1-port
Number of Exhaust Pipes
1
Lights
Main Beam
Halogen
Low Beam
Halogen
Rear Lights
Halogen
Fog Lights
Optional
Fog Lights
Spot Light
Optional
Colour
Finish
Solid
Rims & Tires
Rim Material
Steel
Total Number of Speakers
1 pcs
Interior Storage › Storage Compartments
Glove Compartment
Yes
Other Equipment
Clock
Analogue
Carpets
Yes
Other Equipment › Carpets
Material
Rubber
Textile
Steering Wheel
Material
Plastic
Steering Ratio
24 :1
Trunk
Rear Trunk
Yes
Carpet
Rug
Rear Trunk
Volume
496 litres
Design
Transmission Knob Material
Plastic
Seats
Colour & Material
Upholstery
Textile
Seat Colour
Grey
Stitching Colour
Grey
Front Seats › Adjustments, Driver
Seat Depth
Yes
Front Seats
Number of Driver Seat Adjustments, Total
2
Second Seat Row
Production Number (Generation)
188,455
Number of Seats
3
Buick
1,066 vehicles
Roadmaster
Model
9 variants
€67,000
MSRP · EUR
8.9
Body
Coupe
Variant
Roadmaster Sedanet
1942–1949
Roadmaster Sedanet Coupe Generations
3 of 4
3rd Generation 2nd Facelift
1947–1948
Year
1948
Powertrain
Sedanet 5.2 Automatic
Horsepower
152 hp
Drivetrain
RWD
Fuel
Transmission
Automatic, 2-speed
Gasoline
Coupe
RWD
Gasoline
