Specifications
The 365 GTC/4 shared the chassis and engine block as the 365 GTB/4 Daytona, riding on the same wheelbase and suspension. Many changes were made to make it a more comfortable grand tourer than its two-seat predecessor and sibling. These included softer spring rate and a hydraulic power steering.
The chassis was a tubular spaceframe, mated to a steel body with aluminium doors and bonnets; as was customary in this period, the bodies were made and finished by Pininfarina in Turin, then sent to Ferrari in Modena for the assembly. The suspension system used transverse A-arms, coil springs coaxial with the shock absorbers (double at the rear), and anti-roll bars on all four corners. Wheels were cast magnesium on Rudge knock-off hubs, while Borrani wire wheels were optional; the braking system used vented discs front and rear.
The engine was a Tipo F 101 AC 000 Colombo V12, displacing 4390 cc.[1] Engine block and cylinder heads were aluminium alloy, with cast iron pressed-in sleeves; chain-driven two overhead camshafts per bank (four in total, as noted by the "4" in the model designation) commanded two valves per cylinder. The V12 was detuned to 340 PS from the Daytona, to provide a more tractable response suited to a GT-oriented Ferrari. In place of the Daytona's downdraft setup, six twin-choke side-draft Weber carburetors were used, whose lower profile made possible the car's lower and sloping hood line.[1] The 5-speed all-synchronised manual transmission was bolted to the engine, another difference from the Daytona which used a transaxle. However the set back placement of the engine and transmission still allowed the car to achieve a near perfect 51:49 weight distribution. The gearbox was rigidly connected to the alloy housing of the rear differential through a torque tube.
Models for export to the United States were fitted with three-point seat belts, side markers and a number of engine modifications to comply with Federal emission standards, including air injection, carbon canister for evaporative emission control and a different exhaust system. On US-specification cars power was down to 320 PS.
