Phil Louis Henny (born 31 January 1943, Montagny-près-Yverdon, Switzerland) is a racing mechanic, driver, and author.
In 1964, Henny modified a Jaguar E for Swiss driver Maurice Caillet, competing in the FIA Endurance races. In 1965, he toured Europe Formula 2 Championship with French driver Bernard Collomb. In 1966, he worked for the Scuderia Filipinetti as a crew chief on the Ford GT40 driven by Peter Sutclife and Dieter Spoerry at the 24 Hours of Le Mans. In 1967, he joined Carroll Shelby racing team and was one of the mechanic participating in the construction of the Ford MK IV, that won Le Mans in 1967, driven by Dan Gurney and A. J. Foyt.
From 1969 until 1976, Henny participated in 19 races with SCCA and IMSA. Driving sports cars, Formula 5000, and GT cars. He raced in the Daytona 24 Hours in 1976. In 1973, Henny founded Drysumpsystems Inc. manufacturing oiling systems adaptable to race cars such as NASCAR, CanAm, TransAm and Formula 5000.
In 2004, Henny released his first book relating his story while working in the sixties at Shelby American.
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