The Ferrari 308 GTB berlinetta and targa-topped 308 GTS are V8 mid-engined, two-seater sports cars manufactured by the Italian company Ferrari from 1975 until 1985. The 308 replaced the Dino 246 GT and GTS in 1975 and was updated as the 328 GTB/GTS in 1985. The similar 208 GTB and GTS were equipped with a smaller, initially naturally aspirated and later turbocharged, two-litre engine, and were sold mainly in Italy.
Design
The 308 had a tube frame with a separate body. The 308 GTB/GTS and GT4 were mechanically similar, and also shared much with the original Dino. Both 308s sit on the same tube platform, however the GT4—being a 2+2—has a longer wheelbase.
The engine was a flat-plane crankshaft V8 of a 90 degree configuration, with two belt-driven overhead camshafts per cylinder bank. It was transversely mounted in unit with the transaxle transmission assembly, which was below and to the rear of the engine's sump. All models used a fully synchromesh
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| caption = 1976 Ferrari 308 GTB
The Pininfarina-styled Ferrari 308 GTB was introduced at the Paris Motor Show in 1975 as a supplement to the Bertone-shaped 2+2 Dino 308 GT4 and a direct replacement for the two-seater Dino 246.
Its F106 AB V8 engine was equipped with four twin-choke Weber 40DCNF carburettors and single coil ignition. European versions produced at 6600 rpm (7700 rpm redline), but American versions were down to at 6,600 rpm due to emissions control devices. European specification cars used dry sump lubrication. Cars destined to the Australian, Japanese and US market were fitted with a conventional wet sump engine from the GT4. All GTS' received a wet-sump engine and were steel-bodied. European GTB models retained the dry sump lubrication until 1981.
There were 3,219 GTS' and 2,897 GTBs made from 1975 to 1980.
308 GTBi/GTSi
thumb|left|1981 308 GTSi, rear view
In 1980 Bosch K-Jetronic mechanical fuel injection was introduced, bringing with it a name change to 308 GTBi and GTSi. The fuel injection system decreased the amount of pollutants but at the cost of performance, with maximum power dropping to on European models and on US models. The fuel injection was coupled to a Marelli MED 803A Digiplex electronic ignition, incorporating a coil, distributor, and ignition module for each bank of cylinders.
Outside, the car was identical to the 308 GTB/GTS, save for metric sized wheels of a slightly different design, fitted with Michelin TRX radial tyres—Michelin XWX on 16-inch wheels were optional. Inside, the clock and oil temperature gauge were moved to the centre console; there were also a new black steering wheel with three perforated spokes, and seats of a different pattern.
494 GTBis and 1743 GTSis were produced before the model was succeeded by the 308 Quattrovalvole in 1982.