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General data  
Year/s of production 1959 – 1964
VIN span 1623 GT – 5805 GT
Number produced 4 ?
Design Giorgio Neri & Luciano Bonacini
Manufactured by Giorgio Neri & Luciano Bonacini
   
Technical specifications  
Chassis 508 F
S/N 3771 GT: 539/61
Length Approx. 4700 mm
Width Approx. 1690 mm
Height Approx. 1330 mm
Wheelbase 2600 mm
Front suspension Independent wheel suspension, double delta wishbones, coil springs, hydraulic telescope shock absorbers  
Rear suspension Rigid axle, longitudinal leaf springs, double trailing links, coil springs, hydraulic telescope shock absorbers
Front track 1354 mm
Rear track 1350 mm
Front tyres 6 x 16 in., Borrani wheels with wired spokes and central locking
Rear tyres 6 x 16 in., Borrani wheels with wired spokes and central locking
Front brakes Hydraulically operated disc brakes
Rear brakes Hydraulically operated disc brakes
Kerb weight Approx. 1200 kg
Body material Steel or aluminium
Body type Spyder or Coupé – in each case with two seats
   
Engine  
Type 128F – Colombo front engine
S/N 3771 GT: 168/61 – Colombo front engine
Number of cylinders V12 – 60°
Displacement 2953 ccm
Bore and stroke 73 x 58,8 mm
Camshaft 1 overhead per cylinder bank
Valves 2 per cylinder
Compression ratio 8,8:1
S/N 3771 GT: 9,8:1
Ignition Single ignition
Lubrication Wet sump lubrication
S/N 3771 GT: Dry sump lubrication
Maximum power Approx. 240 hp – 7.000 rpm
S/N 3771 GT: Approx. 280 hp – 7.500 rpm
Maximum torque Approx. 265 Nm (27 mkg) – 5.000 rpm
Carburettor 3 Weber twin carburettors, type 36 DCF
S/N 3771 GT: 6 Weber twin carburettors, type 38 DCN
Gearbox 4 gears plus overdrive + rev.
S/N 3771 GT: 5 gears + rev.
   
Performance  
Top speed Approx. 240 km/h
   
VINs  
  Nembo Coupé S/N 1623 GT:
S/N from 250 GT Coupé, converted 1964
  Nembo Spyder S/N 1777 GT:
S/N from 250 GT Cabriolet Series 2
  Nembo Spyder S/N 3771 GT:
S/N from 250 GT SWB
  Nembo Spyder S/N 5805 GT:
S/N from 330 GT 2+2 Series 1, right hand drive

 

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