The V12 engine was slightly detuned compared to the 365 GTB4 and the maximum revs lowered to render it less high-strung, highlighting its torquey nature and making it more tractable at low speeds. But in true Ferrari tradition, the engine could be wrung out to over 7,000 rpm with ease. Most of the production was sold in the United States
The 365 GTC4 model was unveiled at the 1971 Geneva Show, and was effectively a replacement for two models in the range, the 365 GTC which had ceased production in 1970, and the 365 GT 2+2 that was dropped from production upon the announcement of the new model.
It fulfilled the roll of the former admirably, by being a more conservatively and less aggressively styled coupe cousin to the 365 GTB4 berlinetta, but only partially succeeded in fulfilling the roll of the latter, as the rear seats of the 2+2 seating arrangement were marginal, for all but very small children. They did however have the facility of folding backs, to provide a useful luggage platform. An unusual feature of the interior was that the seat centres and door trim were upholstered in a plaid cloth material, unique to this model, although the more normal full leather trim remained available upon request.
From the outset both European and USA market versions were available, the latter being fitted with emission control equipment that sapped performance, and was recognisable by rectangular side marker lights on the front and rear wings.
This was the first new 12-cylinder Ferrari model announced after the Fiat takeover of road car production control in 1969, and for a completely new body style had a relatively short production run into the autumn of 1972, by which time 500 examples had been built. However, the mechanical layout was carried over into the succeeding 365 GT 2+2 model virtually unchanged, apart from a lengthened chassis.