In 1967 Porsche had discovered the competition potential of the 911 with the blisteringly quick 911 R. It was, however, not built in sufficient numbers to be homologated as a GT racer. To that end, Porsche instead decided to apply the lessons learned to mildly modify the already homologated 911 T, which was the base but also the lightest model in the range. The result was the 911 T/R, which was built in very small numbers during the 1968 season. It was available in various states of tune and the options included a well honed fuel-injected version of the flat six engine that was also used in Porsche's prototype racers. Of the estimated 35 examples built, we have added three different examples, one of which sold recently for close to $500,000.
Rare still is the Ferrari 512 BB Competizione built a decade later. Four of these machines were built specifically for Le Mans in 1978 with some backdoor support from the factory. Unfortunately, the near production GT racer was not quite quick or reliable enough to challenge the mighty Porsche 935s. They did however convince Ferrari to do some further development work, which resulted in the much wilder 512 BB LM, which debuted in 1979. Our detailed article includes a 28-shot gallery of the Ecurie Francorchamps entry.

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1978 Ferrari 512 BB Competizione - Images, Specifications and Information

1968 Porsche 911 T/R - Images, Specifications and Information