The Jeep Tornado engine was the first post-World War II U.S.-designed mass-produced overhead cam (OHC) automobile engine. The 230.5 cu in (3.78 L) straight-six was introduced in mid-year 1962, and replaced the flathead 6-226 Willys Super Hurricane that was in use since 1954. The Tornado engine was also manufactured in Argentina by Industrias Kaiser Argentina (IKA) from 1965 to 1982. The automaker was bought out to form Renault Argentina, and the engine was produced until 1978.