Ferrari 328 GTB
The 308 series had won universal acclaim from both customers and critics, and its natural evolution continued with the 328 GTB, a berlinetta fitted with the new 3.2-litre version of the V8. This new engine (again featuring four valves per cylinder) produced a specific output of 85 bhp per litre, compared with 82 for the 4-valve version of the 308.
Essentially the new model was a revised and updated version of the 308 GTB, which had survived for almost a decade without any radical change to the overall shape, albeit with various changes to the 3 litre engine. Thus all the eight cylinder cars in the range shared fairly unified front and rear aspects, providing a homogeneous family image.
The exhaust air louvres behind the retractable headlight pods on the 308 series disappeared, coupled with an increase in the size of the front lid radiator exhaust air louvre, which had been introduced on the 308 Quattrovalvole models, whilst a new style and position of exterior door catch was also provided. The V8 engine was essentially of the same design as that used in the 308 Quattrovalvole model, with an increase in capacity to 3185cc, with a bore and stroke of 83mm x 73mm, and a type reference number F 105 CB 000.
The engine retained the Bosch K-Jetronic fuel injection system of its predecessor, but was fitted with a Marelli MED 806 A electronic ignition system, to produce a claimed power output of 270bhp at 7000rpm.
As with the preceding 308 models the engine was mounted in unit with the all synchromesh five speed transmission assembly, which was below, and to the rear of the engine’s sump.
In the middle of 1988 ABS brakes were made available as an option, which necessitated a redesign of the suspension geometry to provide negative offset. This in turn meant that the road wheel design was changed to accommodate this feature. The original flat spoke “star” wheels became a convex design, in the style as fitted to the 3.2 Mondial models, whether ABS was fitted or not.
Ferrari 328 GTB Technical Specifications
Year of Manufacture – 1985
|type||rear, transverse, 90° V8|
|bore/stroke||83 x 73.6 mm|
|unitary displacement||398,22 cc|
|total displacement||3185.76 cc|
|compression ratio||9.8 : 1|
|maximum power||199 kW (270 hp) at 7000 rpm|
|power per litre||85 hp/l|
|maximum torque||304 Nm (31 kgm) at 5500 rpm|
|valve actuation||twin overhead camshafts per bank, four valves per cylinder|
|fuel feed||Bosch K-Jetronic mechanical injection|
|ignition||Marelli Microplex electronic, single spark plug per cylinder|
|front suspension||independent, unequal-length wishbones, coil springs over telescopic shock absorbers, anti-roll bar|
|rear suspension||independent, unequal-length wishbones, coil springs over telescopic shock absorbers, anti-roll bar|
|transmission||5-speed + reverse|
|fuel tank||capacity 74 litres|
|front tyres||205/55 VR 16|
|rear tyres||225/50 VR 16|
|front track||1485 mm|
|rear track||1465 mm|
|weight||1263 kg (dry)|
|top speed||263 km/h|
|acceleration 0-100 km/h||6.4 sec|
|0-400 m||14.3 sec|
|0-1000 m||25.7 sec|