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Pontiac Sunbird Sport Coupé

(1979 model)

Brief specs of 1979 Pontiac Sunbird Sport Coupé

2-door 2+2-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, 85.8 kW / 115.1 hp / 115.1 hp @ 3800 rpm / 3800 rpm / 3800 rpm, 257.0 N·m / 189.6 lb·ft / 189.6 lb·ft @ 2000 rpm / 2000 rpm / 2000 rpm, manual 4-speed transmission, rear wheel drive, 160 km/h / 99 mph / 99 mph top speed

units: metric UK US

Basic (general) data

Marque (make)PontiacIssued from1979
ModelSunbird Sport CoupéIssued until
SerieSunbirdNumber made
Model familyBody construction
Model codeBody designation
ManufacturerPontiacCountryUS

Bodywork

Base platformNumber of doors2
Bodywork typefixed-head coupéNumber of seats2+2
Bodywork designerCargo capacity (volume)
Passenger space (volume)Max. cargo capacity (volume)

Dimensions & Weight

Length4550 mm / 179.1 in / 179.1 inTotal (curb) weight1250 kg / 2756 lb / 2756 lb
Width1660 mm / 65.4 in / 65.4 inDry weight
Height1260 mm / 49.6 in / 49.6 inLoad capacity
Wheelbase2460 mm / 96.9 in / 96.9 inGross (max.) weight
Track front1405 mm / 55.3 in / 55.3 inTowing weight
Track rear1374 mm / 54.1 in / 54.1 inWeight distribution (front)
Ground clearance124 mm / 4.9 in / 4.9 inFuel capacity70 l / 15.4 UK gal / 18.5 US gal
Length/wheelbase ratio1.85  

Aerodynamics

Drag coefficient (Cd, Cx, Cw)Frontal area (A)1.78 m2 / 19.1 sq ft / 19.1 sq ft (est.)
Aerodynamic coefficient (Cd×A)Aerodynamic resistance (Aero horse power) at 100 km/h (62 mph)

Engine

Engine CodeTotal number of cylinders6
Engine TypeV engine Total number of valves12
Engine ManufacturerGMValves per cylinder2
Engine constructionBore96.5 mm / 3.80 in / 3.80 in
Fuelpetrol (gasoline)Stroke86.4 mm / 3.40 in / 3.40 in
Fuel detailsBore/Stroke ratio1.12
Fuel supply1 Ro carbEngine 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 power85.8 kW / 115.1 hp / 115.1 hp at 3800 rpm / 3800 rpm / 3800 rpm
AspirationnaturalMax. torque257.0 N·m / 189.6 lb·ft / 189.6 lb·ft at 2000 rpm / 2000 rpm / 2000 rpm
Compressor typeN/AMaximum rpm
IntercoolernoMax. net output (power at the wheels)34.3 kW / 46.0 hp / 46.0 hp (est.)
CoolantwaterSpecific output22.6 kW/l / 0.497 bhp/cu in / 0.497 bhp/cu in
Catalytic converteryesSpecific torque67.8 N·m/l / 0.59 lb·ft/cu in / 0.59 lb·ft/cu in

Transmission

Transmission typemanualNumber of gears4
Wheel driverear wheel driveTop gear (drive) ratio1
  Final gear (drive) ratio2.93

Performance

Acceleration 0-50 mph (80 km/h)Top (maximal) speed160 km/h / 99 mph / 99 mph
Acceleration 0-60 mph (97 km/h)Power-to-weight ratio92.0 kW/ton / 69.7 bhp/ton / 69.7 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-lock4.4Turning circle11.7 m / 38.4 ft / 38.4 ft
Suspension frontIndependent, Wishbone (A-arm, control arm), Coil springsSuspension rearLive axle, Radius arms, Trailing arm, Coil springs
Wheels frontWheels rear
Tyres frontTyres rear
Brakes frontdiscBrakes reardrum
Brake diameter frontBrake diameter rear
Brakes detailsservo-assistedBraked area

Technical specifications and performance data of Pontiac Sunbird Sport Coupé

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