1966 Ford F-100

The 1961-1966 Ford F-100 was the fourth generation of Ford's F-Series and is best known for two features. The first was the integrated cab-and-bed "unibody" design offered from 1961 through 1963 on two-wheel-drive Styleside trucks, in which the cab and box were a single continuous structure rather than separate units. Ford dropped the integrated body partway through 1963, and the 1964 Ford F-100 returned to a conventional separate cab and bed. The second feature was the Twin-I-Beam front suspension, an independent front layout Ford introduced for the 1965 model year on the two-wheel-drive F-100. Engines spanned a transition: the 223-cubic-inch Mileage Maker six and 292-cubic-inch Y-block V8 carried over from the previous generation, and for 1965 Ford introduced the new 240-cubic-inch and 300-cubic-inch inline-sixes that would serve the F-100 for years, joined by the FE-family 352-cubic-inch V8, which replaced the 292 Y-block. Horsepower in this period was quoted in SAE gross figures, before the 1972 move to net ratings.