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Pontiac Grand Prix Hardtop Coupé

(1979 model)

Brief specs of 1979 Pontiac Grand Prix Hardtop Coupé

2-door 5-seater fixed-head coupé, petrol (gasoline) 8-cylinder 16-valve V engine, OHV (overhead valve, I-head), 5013 cm3 / 305.9 cu in / 305.9 cu in, 114.1 kW / 153.0 hp / 153.0 hp @ 4000 rpm / 4000 rpm / 4000 rpm, 304.0 N·m / 224.2 lb·ft / 224.2 lb·ft @ 2400 rpm / 2400 rpm / 2400 rpm, automatic 3-speed transmission, rear wheel drive, 180 km/h / 112 mph / 112 mph top speed

units: metric UK US

Basic (general) data

Marque (make)PontiacIssued from1979
ModelGrand Prix Hardtop CoupéIssued until
SerieGrand PrixNumber made
Model familyBody construction
Model codeBody designation
ManufacturerPontiacCountryUS

Bodywork

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

Dimensions & Weight

Length5116 mm / 201.4 in / 201.4 inTotal (curb) weight1446 kg / 3188 lb / 3188 lb
Width1847 mm / 72.7 in / 72.7 inDry weight
Height1354 mm / 53.3 in / 53.3 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 clearance135 mm / 5.3 in / 5.3 inFuel capacity69 l / 15.2 UK gal / 18.2 US gal
Length/wheelbase ratio1.86  

Aerodynamics

Drag coefficient (Cd, Cx, Cw)Frontal area (A)2.13 m2 / 22.9 sq ft / 22.9 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 Total number of valves16
Engine ManufacturerGMValves per cylinder2
Engine constructioncast iron block & headBore95.0 mm / 3.74 in / 3.74 in
Fuelpetrol (gasoline)Stroke88.4 mm / 3.48 in / 3.48 in
Fuel detailsBore/Stroke ratio1.07
Fuel supply1 Ro M4MC carbEngine displacement5013 cm3 / 305.9 cu in / 305.9 cu in
Engine Main bearings5Unitary capacity626.63 cm3/cylinder / 38.239 cu in/cylinder / 38.239 cu in/cylinder
Cam DesignOHV (overhead valve, I-head)Compression ratio8.4 : 1
SumpMax. output power114.1 kW / 153.0 hp / 153.0 hp at 4000 rpm / 4000 rpm / 4000 rpm
AspirationnaturalMax. torque304.0 N·m / 224.2 lb·ft / 224.2 lb·ft at 2400 rpm / 2400 rpm / 2400 rpm
Compressor typeN/AMaximum rpm
IntercoolernoMax. net output (power at the wheels)45.6 kW / 61.2 hp / 61.2 hp (est.)
CoolantwaterSpecific output22.8 kW/l / 0.500 bhp/cu in / 0.500 bhp/cu in
Catalytic converteryesSpecific torque60.6 N·m/l / 0.53 lb·ft/cu in / 0.53 lb·ft/cu in

Transmission

Transmission typeautomaticNumber of gears3
Wheel driverear wheel driveTop gear (drive) ratio1
  Final gear (drive) ratio2.29

Performance

Acceleration 0-50 mph (80 km/h)Top (maximal) speed180 km/h / 112 mph / 112 mph
Acceleration 0-60 mph (97 km/h)Power-to-weight ratio105.8 kW/ton / 80.2 bhp/ton / 80.2 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
Steeringrecirculating ballSteering details
Turns lock-to-lock3.3Turning circle
Suspension frontSuspension rear
Wheels front6 x 14Wheels rear6 x 14
Tyres frontP195/75 R 14Tyres rearP195/75 R 14
Brakes frontventilated discBrakes reardrum
Brake diameter front267 mm / 10.5 in / 10.5 inBrake diameter rear
Brakes detailsservo-assistedBraked area

Technical specifications and performance data of Pontiac Grand Prix Hardtop Coupé

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