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Buick 70 Roadmaster

(1954 model)

Brief specs of 1954 Buick 70 Roadmaster

4-door 5-seater sedan (saloon), petrol (gasoline) 8-cylinder 16-valve V engine, OHV (overhead valve, I-head), 5276 cm3 / 322.0 cu in / 322.0 cu in, 149.1 kW / 199.9 hp / 199.9 hp @ 4100 rpm / 4100 rpm / 4100 rpm, 410.0 N·m / 302.4 lb·ft / 302.4 lb·ft @ 2400 rpm / 2400 rpm / 2400 rpm, automatic 3-speed transmission, rear wheel drive, 161 km/h / 100 mph / 100 mph top speed

units: metric UK US

Basic (general) data

Marque (make)BuickIssued from1954
Model70 RoadmasterIssued until
Serie70Number made
Model familyBody construction
Model code72RBody designation
ManufacturerBuickCountryUS

Bodywork

Base platformNumber of doors4
Bodywork typesedan (saloon)Number of seats5
Bodywork designerCargo capacity (volume)
Passenger space (volume)Max. cargo capacity (volume)

Dimensions & Weight

Length5507 mm / 216.8 in / 216.8 inTotal (curb) weight1983 kg / 4372 lb / 4372 lb
Width2029 mm / 79.9 in / 79.9 inDry weight
Height1588 mm / 62.5 in / 62.5 inLoad capacity
Wheelbase3226 mm / 127.0 in / 127.0 inGross (max.) weight
Track frontTowing weight
Track rearWeight distribution (front)
Ground clearanceFuel capacity72 l / 15.8 UK gal / 19.0 US gal
Length/wheelbase ratio1.71  

Aerodynamics

Drag coefficient (Cd, Cx, Cw)Frontal area (A)2.74 m2 / 29.5 sq ft / 29.5 sq ft (est.)
Aerodynamic coefficient (Cd×A)Aerodynamic resistance (Aero horse power) at 100 km/h (62 mph)

Engine

Engine CodeTotal number of cylinders8
Engine TypeV engine (V8)Total number of valves16
Engine ManufacturerGMValves per cylinder2
Engine constructionBore101.6 mm / 4.00 in / 4.00 in
Fuelpetrol (gasoline)Stroke81.3 mm / 3.20 in / 3.20 in
Fuel detailsBore/Stroke ratio1.25
Fuel supply1 St carbEngine displacement5276 cm3 / 322.0 cu in / 322.0 cu in
Engine Main bearingsUnitary capacity659.50 cm3/cylinder / 40.245 cu in/cylinder / 40.245 cu in/cylinder
Cam DesignOHV (overhead valve, I-head)Compression ratio8.5 : 1
SumpwetMax. output power149.1 kW / 199.9 hp / 199.9 hp at 4100 rpm / 4100 rpm / 4100 rpm
AspirationnaturalMax. torque410.0 N·m / 302.4 lb·ft / 302.4 lb·ft at 2400 rpm / 2400 rpm / 2400 rpm
Compressor typeN/AMaximum rpm
IntercoolernoMax. net output (power at the wheels)59.6 kW / 80.0 hp / 80.0 hp (est.)
CoolantwaterSpecific output28.3 kW/l / 0.621 bhp/cu in / 0.621 bhp/cu in
Catalytic converternoSpecific torque77.7 N·m/l / 0.68 lb·ft/cu in / 0.68 lb·ft/cu in

Transmission

Transmission typeautomaticNumber of gears3
Wheel driverear wheel driveTop gear (drive) ratio1
  Final gear (drive) ratio3.4

Performance

Acceleration 0-50 mph (80 km/h)Top (maximal) speed161 km/h / 100 mph / 100 mph
Acceleration 0-60 mph (97 km/h)Power-to-weight ratio100.9 kW/ton / 76.4 bhp/ton / 76.4 bhp/ton
Acceleration 0-100 km/hFuel consumption, City (urban)
Acceleration 0-100 mph (160 km/h)Fuel consumption, Road (extra-urban)
Acceleration 80-120 km/h (50-70 mph) in topFuel consumption, Mixed (combined)
Standing ¼mile time Fuel consumption, Euro
Standing kilometer time CO2 emissions
  Range

Chassis

Engine locationfrontEngine alignmentlongitudinal
SteeringSteering details
Turns lock-to-lockTurning circle
Suspension frontIndependent, Coil springsSuspension rearLive axle, Coil springs
Wheels front6 x 15Wheels rear6 x 15
Tyres front8.00-15Tyres rear8.00-15
Brakes frontdrumBrakes reardrum
Brake diameter frontBrake diameter rear
Brakes detailsBraked area

Technical specifications and performance data of Buick 70 Roadmaster

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