Chevrolet Corvette SS

The Chevrolet Corvette SS was a sports racing car built by Chevrolet in 1957 under the project name XP-64. It was Chevrolet's first purpose-built race car and the successor to the SR and SR-2 Corvettes that raced in 1956. Zora Arkus-Duntov developed the chassis, a tubular steel space frame inspired by the Mercedes-Benz 300 SL, and the full-specification car carried a magnesium body. Its engine was a production Chevrolet small-block V8 of 283 cubic inches with Rochester Ramjet fuel injection, rated at 310 horsepower and driving through a four-speed manual transmission. Two cars were completed, a development mule and the full-specification car. The SS raced only once, at the 1957 12 Hours of Sebring, where John Fitch retired it after 23 laps; the Automobile Manufacturers Association racing ban then ended the programme. The car was sold at auction in February 2025 for 7.7 million US dollars.