The fourth generation Ford Thunderbird is a large personal luxury car produced by Ford for the 1964 to 1966 model years. This generation of the Thunderbird was restyled in favor of a more squared-off, "formal" look. The only remnant of the Thunderbird's former sporty image was that the standard 390-cubic-inch 300 hp (224 kW) V8 engine needed nearly 11 seconds to push the heavy T-bird to 60 mph (97 km/h). The softly sprung suspension allowed considerable body lean, wallow, and float on curves and bumps. Contemporary testers felt that the Buick Riviera, Pontiac Grand Prix and Chrysler 300K were substantially more roadworthy cars, but the Thunderbird retained its leading market share.

The Ford FE engine is a medium block V8 engine produced by the Ford Motor Company and used in vehicles sold in the North American market between 1958 and 1976. The FE, derived from 'Ford-Edsel', was introduced just four years into the short-lived Ford Y-block engine, which American cars and trucks were outgrowing. It was designed with room to be significantly expanded, and manufactured both as a top-oiler and side-oiler, and in displacements between 332 cu in (5.4 L) and 428 cu in (7.0 L).