Porsche 930

Porsche began turbocharging their race cars during the late 1950s, and in 1972 began development on a turbocharged version of the 911. Porsche originally needed to produce the car in order to comply with homologation regulations and had intended on marketing it as a street legal race vehicle. Ferdinand "Ferry" Porsche, who was running the company at the time, handed development of the vehicle over to Ernst Fuhrmann, who adapted the turbo-technology originally developed for the 917/30 CAN-AM car to the 3.0 litre flat-six from the Carrera RS 3.0, creating what Porsche dubbed as 930. Total output from the engine was 260 PS (191 kW; 256 hp), more than the Carrera. Porsche badged the vehicle "Turbo" and debuted it at the Paris Auto Show in October 1974 before putting it on sale in the spring of 1975.

Porsche made its first and most significant upgrades to the 930 for 1978, enlarging the engine to 3.3 litres and adding an air-to-air intercooler. By cooling the pressurized air charge, the intercooler helped increase power output to 300 hp, the rear 'whale tail' spoiler was re-profiled and raised to make room for the intercooler. Porsche also upgraded the brakes to units similar to those used on the 917 racecar.

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