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AC 428 Convertible

(1967 model)

Brief specs of 1967 AC 428 Convertible

2-door 2-seater drophead coupé (convertible coupé), petrol (gasoline) 8-cylinder 16-valve V engine, OHV (overhead valve, I-head), 7010 cm3 / 427.8 cu in / 427.8 cu in, 257.3 kW / 345.0 hp / 345.0 hp @ 4600 rpm / 4600 rpm / 4600 rpm, 626.0 N·m / 461.7 lb·ft / 461.7 lb·ft @ 2800 rpm / 2800 rpm / 2800 rpm, automatic 3-speed transmission, rear wheel drive, 233 km/h / 145 mph / 145 mph top speed

units: metric UK US

Basic (general) data

Marque (make)ACIssued from1967
Model428 ConvertibleIssued until
Serie428Number made
Model familyBody construction
Model codeBody designation
ManufacturerAC Cars Group Ltd.CountryUK

Bodywork

Base platformNumber of doors2
Bodywork typedrophead coupé (convertible coupé)Number of seats2
Bodywork designerFruaCargo capacity (volume)
Passenger space (volume)3450 l / 121.84 cu ft / 121.84 cu ftMax. cargo capacity (volume)

Dimensions & Weight

Length4509 mm / 177.5 in / 177.5 inTotal (curb) weight1483 kg / 3269 lb / 3269 lb
Width1702 mm / 67.0 in / 67.0 inDry weight
Height1257 mm / 49.5 in / 49.5 inLoad capacity
Wheelbase2438 mm / 96.0 in / 96.0 inGross (max.) weight
Track front1397 mm / 55.0 in / 55.0 inTowing weight
Track rear1422 mm / 56.0 in / 56.0 inWeight distribution (front)
Ground clearance178 mm / 7.0 in / 7.0 inFuel capacity86 l / 18.9 UK gal / 22.7 US gal
Length/wheelbase ratio1.85  

Aerodynamics

Drag coefficient (Cd, Cx, Cw)Frontal area (A)1.82 m2 / 19.6 sq ft / 19.6 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 (V8)Total number of valves16
Engine ManufacturerFordValves per cylinder2
Engine constructioncast iron block & headBore105.0 mm / 4.13 in / 4.13 in
Fuelpetrol (gasoline)Stroke101.2 mm / 3.98 in / 3.98 in
Fuel detailsBore/Stroke ratio1.04
Fuel supply1 Ford carbEngine displacement7010 cm3 / 427.8 cu in / 427.8 cu in
Engine Main bearings5Unitary capacity876.25 cm3/cylinder / 53.472 cu in/cylinder / 53.472 cu in/cylinder
Cam DesignOHV (overhead valve, I-head)Compression ratio10.5 : 1
SumpwetMax. output power257.3 kW / 345.0 hp / 345.0 hp at 4600 rpm / 4600 rpm / 4600 rpm
AspirationnaturalMax. torque626.0 N·m / 461.7 lb·ft / 461.7 lb·ft at 2800 rpm / 2800 rpm / 2800 rpm
Compressor typeN/AMaximum rpm5250 rpm / 5250 rpm / 5250 rpm
IntercoolernoMax. net output (power at the wheels)102.9 kW / 138.0 hp / 138.0 hp (est.)
CoolantwaterSpecific output36.7 kW/l / 0.806 bhp/cu in / 0.806 bhp/cu in
Catalytic converternoSpecific torque89.3 N·m/l / 0.78 lb·ft/cu in / 0.78 lb·ft/cu in

Transmission

Transmission typeautomaticNumber of gears3
Wheel driverear wheel driveTop gear (drive) ratio1
  Final gear (drive) ratio2.88

Performance

Acceleration 0-50 mph (80 km/h)Top (maximal) speed233 km/h / 145 mph / 145 mph
Acceleration 0-60 mph (97 km/h)Power-to-weight ratio232.6 kW/ton / 176.3 bhp/ton / 176.3 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
Steeringrack & pinionSteering details
Turns lock-to-lock3.5Turning circle13.4 m / 44.0 ft / 44.0 ft
Suspension frontIndependent, Coil springs, Double wishbonesSuspension rearIndependent, Coil springs, Double wishbones
Wheels frontWheels rear
Tyres front205 x 15Tyres rear205 x 15
Brakes frontdiscBrakes reardisc
Brake diameter front298 mm / 11.7 in / 11.7 inBrake diameter rear267 mm / 10.5 in / 10.5 in
Brakes detailsservo-assistedBraked area

Technical specifications and performance data of AC 428 Convertible

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