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Pontiac Grand Am

(1973 model)

Brief specs of 1973 Pontiac Grand Am

2-door 5-seater fixed-head coupé, petrol (gasoline) 8-cylinder 16-valve V engine, OHV (overhead valve, I-head), 6556 cm3 / 400.1 cu in / 400.1 cu in, 126.8 kW / 170.0 hp / 170.0 hp @ 3600 rpm / 3600 rpm / 3600 rpm, 434.0 N·m / 320.1 lb·ft / 320.1 lb·ft @ 2000 rpm / 2000 rpm / 2000 rpm, automatic 3-speed transmission, rear wheel drive

units: metric UK US

Basic (general) data

Marque (make)PontiacIssued from1973
ModelGrand AmIssued until
SerieGrand AmNumber 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

Length5298 mm / 208.6 in / 208.6 inTotal (curb) weight1950 kg / 4299 lb / 4299 lb
Width1974 mm / 77.7 in / 77.7 inDry weight
Height1344 mm / 52.9 in / 52.9 inLoad capacity
Wheelbase2845 mm / 112.0 in / 112.0 inGross (max.) weight
Track front1572 mm / 61.9 in / 61.9 inTowing weight
Track rear1552 mm / 61.1 in / 61.1 inWeight distribution (front)57.0 % / 57.0 % / 57.0 %
Ground clearance107 mm / 4.2 in / 4.2 inFuel capacity95 l / 20.8 UK gal / 25.0 US gal
Length/wheelbase ratio1.86  

Aerodynamics

Drag coefficient (Cd, Cx, Cw)Frontal area (A)2.26 m2 / 24.3 sq ft / 24.3 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 (90.0° vee)Total number of valves16
Engine ManufacturerPontiacValves per cylinder2
Engine constructionBore104.7 mm / 4.12 in / 4.12 in
Fuelpetrol (gasoline)Stroke95.2 mm / 3.75 in / 3.75 in
Fuel detailsBore/Stroke ratio1.1
Fuel supply1 Rochester carburettorEngine displacement6556 cm3 / 400.1 cu in / 400.1 cu in
Engine Main bearingsUnitary capacity819.50 cm3/cylinder / 50.009 cu in/cylinder / 50.009 cu in/cylinder
Cam DesignOHV (overhead valve, I-head)Compression ratio8.0 : 1
SumpMax. output power126.8 kW / 170.0 hp / 170.0 hp at 3600 rpm / 3600 rpm / 3600 rpm
AspirationnaturalMax. torque434.0 N·m / 320.1 lb·ft / 320.1 lb·ft at 2000 rpm / 2000 rpm / 2000 rpm
Compressor typeN/AMaximum rpm
IntercoolernoMax. net output (power at the wheels)66.2 kW / 88.7 hp / 88.7 hp (est.)
CoolantwaterSpecific output19.3 kW/l / 0.425 bhp/cu in / 0.425 bhp/cu in
Catalytic converterSpecific torque66.2 N·m/l / 0.58 lb·ft/cu in / 0.58 lb·ft/cu in

Transmission

Transmission typeautomaticNumber of gears3
Wheel driverear wheel driveTop gear (drive) ratio1
  Final gear (drive) ratio3.08

Performance

Acceleration 0-50 mph (80 km/h)7.40 s / 7.40 s / 7.40 sTop (maximal) speed
Acceleration 0-60 mph (97 km/h)10.30 s / 10.30 s / 10.30 sPower-to-weight ratio87.2 kW/ton / 66.1 bhp/ton / 66.1 bhp/ton
Acceleration 0-100 km/hFuel consumption, City (urban)
Acceleration 0-100 mph (160 km/h)33.70 s / 33.70 s / 33.70 sFuel consumption, Road (extra-urban)
Acceleration 80-120 km/h (50-70 mph) in topFuel consumption, Mixed (combined)
Standing ¼mile time17.50 s / 17.50 s / 17.50 s (top 78 km/h / 48 mph / 48 mph)Fuel consumption, Euro
Standing kilometer time CO2 emissions
  Range

Chassis

Engine locationfrontEngine alignmentlongitudinal
Steeringrecirculating ball PASSteering details
Turns lock-to-lock3.3Turning circle
Suspension frontIndependent, Double wishbones, Coil springs, Anti-roll (anti-sway) bar (ARB)Suspension rearLive axle, Trailing arm, Coil springs, Anti-roll (anti-sway) bar (ARB)
Wheels front7JJ x 15Wheels rear7JJ x 15
Tyres frontUniroyal GR70-15Tyres rearUniroyal GR70-15
Brakes frontdiscBrakes reardrum
Brake diameter front279 mm / 11.0 in / 11.0 inBrake diameter rear241 mm / 9.5 in / 9.5 in
Brakes detailsservo-assistedBraked area

Technical specifications and performance data of Pontiac Grand Am

Infobox

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