He raced in the 1961–1983 seasons, with 178 combined career starts, including 15 in the Indianapolis 500 in 1962–1970, 1973–1974, and 1977–1980. He finished 48 times in the top 5, with five victories. He was runner-up in the 1966 championship and third in 1963, 1965, and 1970. In 1962 he was named Indianapolis 500 Rookie of the Year, a result of his 6th-place finish.