You guys are really baggin' on the C4 but in 1990 a C4 team broke several long held records:
At the 24-hour mark the team was ecstatic with job. They had not only shattered a 50-year speed record, they accomplished their goal with a slightly modified production automobile – Ab Jenkins’ car was a purpose-build racecar with 750-horsepower, the ZR-1 had around 400-410-horsepower. And the sauce for the goose was that Ford, Mercedes-Benz, and Audi couldn’t do what the ZR-1 Corvette team did. Since all was well with the ZR-1 and the team was pumped, they decided to go for more – the 5000-mile record was in sight! The ZR-1 completed 5000 miles in 28-hours, 46-minutes, and 12.426-seconds.
The entire effort was about breaking a long-standing speed, endurance, and distance records. At the end of the experience, the team racked up the following records;
5000 Kilometers at 175.710-mph
24-Hours at 175.885-mph
5000 Miles at 173.791-mph
Pretty fabulous stuff...http://www.corvettereport.com/morrison-1990-zr-1-speed-record-aver-24-hour-174-885-mph/