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Pontiac Firebird Trans Am

(1985 model)

Brief specs of 1985 Pontiac Firebird Trans Am

2-door 2+2-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, 141.7 kW / 190.0 hp / 190.0 hp @ 4800 rpm / 4800 rpm / 4800 rpm, 325.0 N·m / 239.7 lb·ft / 239.7 lb·ft @ 3200 rpm / 3200 rpm / 3200 rpm, manual 5-speed transmission, rear wheel drive, 205 km/h / 127 mph / 127 mph top speed

units: metric UK US

Basic (general) data

Marque (make)PontiacIssued from1985
ModelFirebird Trans AmIssued until
SerieFirebirdNumber 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

Length4872 mm / 191.8 in / 191.8 inTotal (curb) weight1474 kg / 3250 lb / 3250 lb
Width1840 mm / 72.4 in / 72.4 inDry weight
Height1260 mm / 49.6 in / 49.6 inLoad capacity
Wheelbase2565 mm / 101.0 in / 101.0 inGross (max.) weight
Track front1540 mm / 60.6 in / 60.6 inTowing weight
Track rear1565 mm / 61.6 in / 61.6 inWeight distribution (front)
Ground clearance115 mm / 4.5 in / 4.5 inFuel capacity61 l / 13.4 UK gal / 16.1 US gal
Length/wheelbase ratio1.9  

Aerodynamics

Drag coefficient (Cd, Cx, Cw)Frontal area (A)1.97 m2 / 21.2 sq ft / 21.2 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 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 ratio9.5 : 1
SumpMax. output power141.7 kW / 190.0 hp / 190.0 hp at 4800 rpm / 4800 rpm / 4800 rpm
AspirationnaturalMax. torque325.0 N·m / 239.7 lb·ft / 239.7 lb·ft at 3200 rpm / 3200 rpm / 3200 rpm
Compressor typeN/AMaximum rpm5300 rpm / 5300 rpm / 5300 rpm
IntercoolernoMax. net output (power at the wheels)56.7 kW / 76.0 hp / 76.0 hp (est.)
CoolantwaterSpecific output28.3 kW/l / 0.621 bhp/cu in / 0.621 bhp/cu in
Catalytic converteryesSpecific torque64.8 N·m/l / 0.57 lb·ft/cu in / 0.57 lb·ft/cu in

Transmission

Transmission typemanualNumber of gears5
Wheel driverear wheel driveTop gear (drive) ratio0.63
  Final gear (drive) ratio3.7

Performance

Acceleration 0-50 mph (80 km/h)Top (maximal) speed205 km/h / 127 mph / 127 mph
Acceleration 0-60 mph (97 km/h)Power-to-weight ratio128.9 kW/ton / 97.7 bhp/ton / 97.7 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 ball PASSteering details
Turns lock-to-lock2.2Turning circle
Suspension frontIndependent, Wishbone (A-arm, control arm), Coil springs, Anti-roll (anti-sway) bar (ARB)Suspension rearLive axle,LongLeadArms, Coil springs, Anti-roll (anti-sway) bar (ARB)
Wheels frontWheels rear
Tyres frontP245/50 R 15Tyres rearP245/50 R 15
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 Firebird Trans Am

Infobox

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