Incorporating a more or less standard 911 frame, the 930 featured suspension lifted directly from 1974's 3-litre Carrera RS, albeit with widened front and rear track. Displayed for the first time during October 1974, the prototype featured cross-drilled and ventilated discs from the 917 sports prototype. For production though, these were switched to regular Carrera items, Porsche citing question marks over long-term reliability for their decision. Although the 930 motor was developed out of the 3-litre Carrera RSR, a thorough re-working was needed before it was ready to incorporate a turbocharger. Designated Typ 930/50, displacement was 2994cc thanks to a bore and stroke of 95 x 70.4mm respectively, the new motor receiving forged alloy pistons with Nikasil barrels and a lightweight aluminium crankcase. Producing 260bhp at 5500rpm, the solitary KKK 3 LDZ turbocharger was configured for a maximum boost of 0.8bar whilst compression was dropped to 6.5:1 in order to limit full boost compression to 11.7:1. Fuel injection was via Bosch's ultra reliable K-Jetronic. An all new Typ 930/30 four-speed transmission was used, Porsche deeming the level of torque so great with just four forward gears that a five-speed box was wholly unnecessary. Top speed was 154mph and 0-60 took 5.7 seconds. Outside, a deep front spoiler lent a more aggressive stance, the emasculated, pumped up appearance continuing with flared wheelarches and a rear-mounted wing.

Luxuriously appointed, the 930 received an electric sunroof and automatic climate control as standard. Announced in October 1974 and going into production during February 1975, the Turbo was an immediate success with demand outstripping supply, the high performance image helping to bolster sales of other 911's. However, before long, Porsche were implementing further developments and for the 1976 model year, production of which began in September 1975, a slightly improved version based upon the revised I-series 911 was launched. Right-hand drive versions became available for the first time whilst other changes came in the form of a turbocharger with boost increased from 0.8 to 1bar, the turbo also gaining a by-pass valve in order to bring power in a little more progressively. North American customers got a US-legal version, these cars featuring a revised Typ 930/51 powerplant. Due to the requirements of Federal legislation, the US-friendly 930 motor was weighed down with emissions equipment that cost it 15bhp, 245bhp being produced at an identical 5500rpm. Meanwhile a new six-year anti-corrosion warranty far exceeded those supplied by most high performance manufacturers and illustrated the superior build quality of these German machines compared to their Italian and English counterparts. The only other addition worthy of mention was a new electric door mirror for the driver.