The Ferrari 400 is the fifth four seater Ferrari build. The four seater line started with the 250 GT followed by the 330 GT. In 1966 Ferrari started to produce the 365. One of the most popular four seater Ferrari’s is the 365GTB4 better know as the Ferrari Daytona. In 1972 the production started of the 365GTC4 2+2. This is the first Ferrari four seater with an angular look. The 365 GTC4, 400 GT and I and the 412 look very similar. They are all four seater 12 cylinder grand tourers. In 1989 Ferrari stopped the production of the Ferrari 412.
The 365 has a carbureted V12 engine and manual gearbox, The successor the 400GT has the same type of engine and gearbox. The 400i is the first Ferrari V12 engine with fuel injection. Ferrari used the Bosch K Jetronic system for this engine. The Bosch K Jetronic system made it easier to meet the USA market regulations. Ferrari offered also new automatic gearbox. Ferrari produced in this four seater line 2.909 cars divided as follows: 365GT4: 525 cars, 400GT: 502 cars, 400i: 1.306 cars, 412: 576 cars.