by Ferrari, the 1973 GT4 and 1975 GTB "308" cars. Although the model name suggests 3.0 L, the V8 displaced only which rounds down to 2.9 L and was another DOHC 2-valve design. Applications: 1973–1976 308 GT4 (branded "Dino") F106AL 1976–1980 308 GT4 (branded "Ferrari") F106AL 1975–1980 308 GTB F106AB 1977–1980 308 GTS F106AB Fuel injection The 1980 "i" models added fuel injection to the existing engine. Applications: 1980–1982 Mondial 8 F106B 1980–1982 308 GTBi & GTSi F106BB Quattrovalvole 4 valves per cylinder were added for the 1982 308 and Mondial Quattrovalvole (or QV), bringing power back up to the pre-FI high of . A very unusual Dino Quattrovalvole was used in the Lancia Thema 8.32. It was based on the 308 QV's engine, but used a cross-plane crankshaft rather than the Ferrari-type flat-plane. The engine was constructed by Ducati rather than Ferrari, and was produced from 1986 through 1991. The Quattrovalvole was also used by Lancia for their attempt at the World Sportscar Championship with the LC2. The engine was twin-turbocharged and destroked to 2.65 litres, but produced in qualifying trim. The engine was later increased to 3.0 litres and increased power output to . Applications: 1982–1985 308 GTB QV & GTS QV F105AB 1982–1985 Mondial QV F105A 1986–1991 Lancia Thema 8.32 F105L 1983–1991 Lancia LC2 2.0 These small V8 variants were chiefly intended for the domestic market, where cars with engines larger than two-litre incurred in an almost doubled 38% value added tax. In 1975 the company introduced the Dino 208 GT4. The bore was reduced from but the stroke remained at . Output was reduced as well, from . Applications: 1975–1976 208 GT4 (branded "Dino") F106C 1976–1980 208 GT4 (branded "Ferrari") F106C 1980–1982 208 GTB F106CB 1980–1982 208 GTS F106CB Turbocharged 1982 saw the introduction of the 208 Turbo. The 208 Turbo featured , more than the fuel injected 308 from the previous year. Except for the non-intercooled 208 Turbo engine, all the forced induction F1 and road engines from 1980 to 1989 were designed and developed by Nicola Materazzi due to his experience in fuels, engines, combustion, turbo and Comprex that had accumulated in his career (Mobil, Lancia, Osella). Applications: 1982–1985 208 GTB Turbo F106D 1982–1985 208 GTS Turbo F106D 1986–1989 GTB Turbo F106N 1986–1989 GTS Turbo F106N 288 GTO The turbo also served as a development platform for the forthcoming 1984 288 GTO sports car.