Seen for the first time at the Geneva Motor Show in 1957, the car was developed by chief engineer Giulio Alfieri as a fast, comfortable gran turismo that offered exhilarating performance but also day to day usability. The straight-six engine, the company’s first unit designed solely for road use, displaced 3485 cc and featured an aluminum block, dual overhead cams, twin-plug ignition and three twin-choke Weber carburetors. The ZF-supplied gearbox was an all-synchro four-speed, but from 1960 this was a five-speed, and a three-speed automatic became an option. Later cars would get Lucas fuel injection and were called 3500GTi. Carbureted cars developed 230 hp and 254 lb-ft of torque, enough for a top speed of 130 mph.