Ferrari 512 S was the designation of 25 five litre sports cars built until January 1970, related to the Ferrari P sports prototypes. The V12-powered cars were entered in the 1970 International Championship for Makes by the factory Scuderia Ferrari and private teams.
The motor of the 512S was a total new 60° V12 with 560 PS (412 kW) output. Compared to Porsche's air-cooled flat-12, it needed a maze of cooling pipes and a heavy radiator. Since the chassis was of sturded steel, reinforced with aluminium sheet, weight was 100 kg more than that of the alloy-framed 917. Notwithstanding the weight difference and higher center of gravity, the Ferrari 512S and Porsche 917 were theoretically fairly evenly matched.
Source: Wikipedia (original)