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Pontiac Bonneville Hardtop

(1977 model)

Brief specs of 1977 Pontiac Bonneville Hardtop

4-door 5-seater sedan (saloon), petrol (gasoline) 8-cylinder 16-valve V engine, OHV (overhead valve, I-head), 4955 cm3 / 302.4 cu in / 302.4 cu in, 100.7 kW / 135.0 hp / 135.0 hp @ 4000 rpm / 4000 rpm / 4000 rpm, 339.0 N·m / 250.0 lb·ft / 250.0 lb·ft @ 1600 rpm / 1600 rpm / 1600 rpm, automatic 3-speed transmission, rear wheel drive

units: metric UK US

Basic (general) data

Marque (make)PontiacIssued from1977
ModelBonneville HardtopIssued until
SerieBonnevilleNumber made
Model familyBody construction
Model codeBody designation
ManufacturerPontiacCountryUS

Bodywork

Base platformNumber of doors4
Bodywork typesedan (saloon)Number of seats5
Bodywork designerCargo capacity (volume)
Passenger space (volume)Max. cargo capacity (volume)

Dimensions & Weight

Length5443 mm / 214.3 in / 214.3 inTotal (curb) weight1640 kg / 3616 lb / 3616 lb
Width1923 mm / 75.7 in / 75.7 inDry weight
Height1351 mm / 53.2 in / 53.2 inLoad capacity
Wheelbase2944 mm / 115.9 in / 115.9 inGross (max.) weight
Track front1567 mm / 61.7 in / 61.7 inTowing weight
Track rear1542 mm / 60.7 in / 60.7 inWeight distribution (front)
Ground clearance142 mm / 5.6 in / 5.6 inFuel capacity80 l / 17.6 UK gal / 21.1 US gal
Length/wheelbase ratio1.85  

Aerodynamics

Drag coefficient (Cd, Cx, Cw)Frontal area (A)2.21 m2 / 23.8 sq ft / 23.8 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 & headBore101.6 mm / 4.00 in / 4.00 in
Fuelpetrol (gasoline)Stroke76.4 mm / 3.01 in / 3.01 in
Fuel detailsBore/Stroke ratio1.33
Fuel supply1 Rochester M2MC 200 carburettorEngine displacement4955 cm3 / 302.4 cu in / 302.4 cu in
Engine Main bearings5Unitary capacity619.38 cm3/cylinder / 37.797 cu in/cylinder / 37.797 cu in/cylinder
Cam DesignOHV (overhead valve, I-head)Compression ratio8.2 : 1
SumpMax. output power100.7 kW / 135.0 hp / 135.0 hp at 4000 rpm / 4000 rpm / 4000 rpm
AspirationnaturalMax. torque339.0 N·m / 250.0 lb·ft / 250.0 lb·ft at 1600 rpm / 1600 rpm / 1600 rpm
Compressor typeN/AMaximum rpm4400 rpm / 4400 rpm / 4400 rpm
IntercoolernoMax. net output (power at the wheels)40.3 kW / 54.0 hp / 54.0 hp (est.)
CoolantwaterSpecific output20.3 kW/l / 0.447 bhp/cu in / 0.447 bhp/cu in
Catalytic converteryesSpecific torque68.4 N·m/l / 0.60 lb·ft/cu in / 0.60 lb·ft/cu in

Transmission

Transmission typeautomaticNumber of gears3
Wheel driverear wheel driveTop gear (drive) ratio1
  Final gear (drive) ratio2.41

Performance

Acceleration 0-50 mph (80 km/h)Top (maximal) speed
Acceleration 0-60 mph (97 km/h)Power-to-weight ratio82.3 kW/ton / 62.4 bhp/ton / 62.4 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 VPASSteering details
Turns lock-to-lock3.5Turning circle
Suspension frontIndependent, Wishbone (A-arm, control arm), Coil springs, Anti-roll (anti-sway) bar (ARB)Suspension rearLive axle,Trail Radius arms, Coil springs, Anti-roll (anti-sway) bar (ARB)
Wheels frontWheels rear
Tyres frontGR78 x 15Tyres rearGR78 x 15
Brakes frontventilated discBrakes reardrum
Brake diameter front279 mm / 11.0 in / 11.0 inBrake diameter rear
Brakes detailsservo-assistedBraked area

Technical specifications and performance data of Pontiac Bonneville Hardtop

Infobox

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