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Buick Regal Grand National

(1987 model)

Brief specs of 1987 Buick Regal Grand National

2-door 5-seater fixed-head coupé, petrol (gasoline) 6-cylinder 12-valve V engine, OHV (overhead valve, I-head), 3791 cm3 / 231.3 cu in / 231.3 cu in, 182.7 kW / 245.0 hp / 245.0 hp @ 4400 rpm / 4400 rpm / 4400 rpm, 481.0 N·m / 354.8 lb·ft / 354.8 lb·ft @ 2000 rpm / 2000 rpm / 2000 rpm, automatic 4-speed transmission, rear wheel drive

units: metric UK US

Basic (general) data

Marque (make)BuickIssued from1987
ModelRegal Grand NationalIssued until
SerieRegalNumber made
Model familyBody construction
Model codeBody designation


Base platformNumber of doors2
Bodywork typefixed-head coupéNumber of seats5
Bodywork designerCargo capacity (volume)
Passenger space (volume)Max. cargo capacity (volume)

Dimensions & Weight

Length5095 mm / 200.6 in / 200.6 inTotal (curb) weight
Width1819 mm / 71.6 in / 71.6 inDry weight
Height1384 mm / 54.5 in / 54.5 inLoad capacity
Wheelbase2746 mm / 108.1 in / 108.1 inGross (max.) weight
Track front1486 mm / 58.5 in / 58.5 inTowing weight
Track rear1468 mm / 57.8 in / 57.8 inWeight distribution (front)
Ground clearanceFuel capacity69 l / 15.1 UK gal / 18.1 US gal
Length/wheelbase ratio1.86  


Drag coefficient (Cd, Cx, Cw)0.41Frontal area (A)2.14 m2 / 23.0 sq ft / 23.0 sq ft (est.)
Aerodynamic coefficient (Cd×A)0.88 m2 / 9.4 sq ft / 9.4 sq ft (est.)Aerodynamic resistance (Aero horse power) at 100 km/h (62 mph)21.8 kW / 29.2 hp / 29.2 hp (est.)


Engine CodeTotal number of cylinders6
Engine TypeV engine (90.0° vee)Total number of valves12
Engine ManufacturerGMValves per cylinder2
Engine constructioncast iron block & headBore96.5 mm / 3.80 in / 3.80 in
Fuelpetrol (gasoline)Stroke86.4 mm / 3.40 in / 3.40 in
Fuel detailsBore/Stroke ratio1.12
Fuel supplySMPFiEngine displacement3791 cm3 / 231.3 cu in / 231.3 cu in
Engine Main bearings4Unitary capacity631.83 cm3/cylinder / 38.557 cu in/cylinder / 38.557 cu in/cylinder
Cam DesignOHV (overhead valve, I-head)Compression ratio8.0 : 1
SumpMax. output power182.7 kW / 245.0 hp / 245.0 hp at 4400 rpm / 4400 rpm / 4400 rpm
AspirationturbochargedMax. torque481.0 N·m / 354.8 lb·ft / 354.8 lb·ft at 2000 rpm / 2000 rpm / 2000 rpm
Compressor typeMaximum rpm
IntercooleryesMax. net output (power at the wheels)73.1 kW / 98.0 hp / 98.0 hp (est.)
CoolantwaterSpecific output48.2 kW/l / 1.059 bhp/cu in / 1.059 bhp/cu in
Catalytic converteryesSpecific torque126.9 N·m/l / 1.11 lb·ft/cu in / 1.11 lb·ft/cu in


Transmission typeautomaticNumber of gears4
Wheel driverear wheel driveTop gear (drive) ratio0.67
  Final gear (drive) ratio3.42


Acceleration 0-50 mph (80 km/h)Top (maximal) speed
Acceleration 0-60 mph (97 km/h)Power-to-weight ratio
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


Engine locationfrontEngine alignmentlongitudinal
Steeringrecirculating ball VPASSteering details
Turns lock-to-lockTurning circle
Suspension frontIndependent, Wishbone (A-arm, control arm), Coil springs, Anti-roll (anti-sway) bar (ARB)Suspension rearLive axle, Coil springs,TorqueA
Wheels frontWheels rear
Tyres front215/85 R 15Tyres rear215/85 R 15
Brakes frontventilated discBrakes reardrum
Brake diameter frontBrake diameter rear
Brakes detailsservo-assistedBraked area

Technical specifications and performance data of Buick Regal Grand National


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