Ferrari 308 GTS Quattrovalvole

1982

308 GTS Quattrovalvole

The transition from carburettor to fuel injection and the introduction of new anti-pollution laws all had a sizeable impact on the power of the 308 GTBi compared to its predecessor, the 308 GTB. Research to remedy this situation was quickly undertaken and soon showed that four valves per cylinder offered the optimal solution to reduce emissions. This innovation saw the engine make up its lost horsepower and the car regain position as the reference point in its category.

Production

The 308 GTB Quattrovalvolve succeeded the 308 GTBi, and was presented at the 1982 Paris Salon. The “Quattrovalvole” part of the model name referred to the four valves per cylinder heads on the engine, which provided increased power over the preceding model.

 

Visually the new model was similar to the outgoing one, but was distinguishable by the addition of; a slim louvre panel in the front lid to aid radiator exhaust air exit, paired electrically operated door mirrors with a small enamel Ferrari badge on the shell, a revised radiator grille with rectangular driving lights at the extremities, and rectangular (instead of round) side repeater lights.

 

The interior also received some minor alterations, and cloth seat centres became available as an option to the standard full leather, whilst the leather rim satin black three spoke steering wheel featured a triangulated section around the horn push. As with the preceding series’ of 308 models, USA market cars could be identified by heavier bumper assemblies, and rectangular side marker lights on the wings. Options available were metallic paint, a deep front spoiler, air conditioning, wider wheels, 16” Speedline wheels with Pirelli P7 tyres, and a rear of roof satin black finished aerofoil (standard on Japanese market models). 

The Engine

 The V8 engine was essentially of the same design as that used in the 308 GTBi model, apart from the four valves per cylinder heads. It was of a 90 degree configuration, with belt driven twin overhead camshafts per bank, having a total capacity of 2926cc, with a bore and stroke of 81mm x 71mm, with wet sump lubrication, bearing factory type reference F 105 AB 000 for European market cars. The claimed power output for main market European cars was 240bhp at 7000rpm, and 235bhp at 6800rpm for US market variants. 

The engine was transversely mounted in unit with the all synchromesh five speed transmission assembly, which was below, and to the rear of the engine’s sump. 

The gear and final drive ratios were altered to suit the revised characteristics of the four valves per cylinder engine. It was fitted with a Bosch K Jetronic fuel injection system, coupled to a Marelli MED 803A Digiplex electronic ignition system, incorporating a coil, distributor and ignition module to serve each bank of cylinders. All US market examples were fitted with catalytic converters. 

Ferrari Fast Facts

How Many 308 GTS Quattrovalvole’s Were Made?

Between 1982-1985 3042 of these model’s were produced. 

How Much is a 308 GTS Quattrovalvole?

Given the greater number of Ferrari 308 Quattrovalvole’s made and slower top speed relative to other Ferrari’s made, it sells for US $60k-190k. 

How Much is a 308 GTB Quattrovalvole? 

A sibling car to the GTS released in the same year at the Paris Salon (1982), the 308 GTB Quattrovalvole is offered for around US $150k. 

How Fast is the 308 GTS Quattrovalvole?

The top speed was recorded at 255km/h.

Specifications

Engine

Typerear, transverse, 90° V8
Bore/stroke81 x 71 mm
Unitary displacement365.68 cc
Total displacement2926.90 cc
Compression ratio9.2 : 1
Maximum power176 kW (240 hp) at 7000 rpm
Power per litre82 hp/l
Maximum torque260 Nm (26.5kgm) at 5000 rpm
Valve actuationtwin overhead camshafts per bank, four valves per cylinder
Fuel feedBosch K-Jetronic injection
Ignitionelectronic, single spark plug per cylinder
Lubricationwet sump
Clutchsingle-plate

Chassis

Frametubular steel
Front suspensionindependent, unequal-length wishbones, coil springs over telescopic shock absorbers, anti-roll bar
Rear suspensionindependent, unequal-length wishbones, coil springs over gas-filled telescopic shock absorbers, anti-roll bar
Brakesdiscs
Transmission5-speed + reverse
Steeringrack-and-pinion
Fuel tankcapacity 74 litres
Front tyres205/55 VR 16
Rear tyres225/50 VR 16

Bodywork

Typetwo-seater targa-top
Length4230 mm
Width1720 mm
Height1120 mm
Wheelbase2340 mm
Front track1460 mm
Rear track1460 mm
Weight1286 kg (dry)

Performance

Top speed255 km/h
Acceleration 0-100 km/h-
0-400 m14.5 sec
0-1000 m26.2 sec

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