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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) 4-cylinder 8-valve straight (inline) engine, OHV (overhead valve, I-head), 2471 cm3 / 150.8 cu in / 150.8 cu in, 67.1 kW / 90.0 hp / 90.0 hp @ 4400 rpm / 4400 rpm / 4400 rpm, 173.0 N·m / 127.6 lb·ft / 127.6 lb·ft @ 2400 rpm / 2400 rpm / 2400 rpm, manual 4-speed transmission, rear wheel drive, 140 km/h / 87 mph / 87 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) weight1181 kg / 2604 lb / 2604 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 cylinders4
Engine Typestraight (inline) Total number of valves8
Engine ManufacturerGMValves per cylinder2
Engine constructionBore101.6 mm / 4.00 in / 4.00 in
Fuelpetrol (gasoline)Stroke76.2 mm / 3.00 in / 3.00 in
Fuel detailsBore/Stroke ratio1.33
Fuel supply1 Ho carbEngine displacement2471 cm3 / 150.8 cu in / 150.8 cu in
Engine Main bearings5Unitary capacity617.75 cm3/cylinder / 37.697 cu in/cylinder / 37.697 cu in/cylinder
Cam DesignOHV (overhead valve, I-head)Compression ratio8.2 : 1
SumpMax. output power67.1 kW / 90.0 hp / 90.0 hp at 4400 rpm / 4400 rpm / 4400 rpm
AspirationnaturalMax. torque173.0 N·m / 127.6 lb·ft / 127.6 lb·ft at 2400 rpm / 2400 rpm / 2400 rpm
Compressor typeN/AMaximum rpm
IntercoolernoMax. net output (power at the wheels)26.8 kW / 36.0 hp / 36.0 hp (est.)
CoolantwaterSpecific output27.1 kW/l / 0.597 bhp/cu in / 0.597 bhp/cu in
Catalytic converteryesSpecific torque70.0 N·m/l / 0.61 lb·ft/cu in / 0.61 lb·ft/cu in

Transmission

Transmission typemanualNumber of gears4
Wheel driverear wheel driveTop gear (drive) ratio1
  Final gear (drive) ratio2.73

Performance

Acceleration 0-50 mph (80 km/h)Top (maximal) speed140 km/h / 87 mph / 87 mph
Acceleration 0-60 mph (97 km/h)Power-to-weight ratio76.2 kW/ton / 57.7 bhp/ton / 57.7 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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