The American Sam Posey tried to grasp the early 1970s vain permanently in the formula 1 foot. He raced in the North American sports car series CanAm and TransAm and was founded in 1970 in the great endurance classics, the 24 Hours of Daytona and the 24 Hours of Le Mans each fifth.
1971, prior to his entry into the USAC series, he earned his first Formula 1 Grand Prix. When the U.S. Grand Prix at Watkins Glen, he drove a factory Surtees TS9 and retired after an engine failure from. In 1972, he got a contract for work at Dan Gurney's Eagle team in the USAC. Posey was fifth in Pocono and the 500 miles of Indianapolis. He enters the end of 1972 his second Grand Prix, again at Watkins Glen. This time he came in twelfth place finish. As it was foreseeable that he would not get a Formula 1 contract for 1973, Posey was in the USAC.
After his sponsor contract expired in 1976, he transferred his ambitions for the sport and touring cars. He was regularly until the mid- 1980s at Le Mans at the start. In 1975, he had already won together with Hans -Joachim Stuck, Brian Redman and Andy Moffat on a factory BMW 3.0 CSL, the 12 Hours of Sebring.
In the late 1970s and early 1980s, he drove sports car racing in North America; in the World Sportscar Championship in 1981, he drove a Datsun 280ZX.
After retiring from active racing Posey worked for many years as a television commentator in the United States.