The Ford F-350 was a heavy-duty variant of the Ninth Generation F-Series that was introduced for the 1992 model year. While primarily based on the chassis from the Eighth Generation F-Series, the redesigned 1992 F-Series, known to enthusiasts as an "Aeronose" or "OBS (Old Body Style)," brought many aerodynamic changes to the exterior and enhanced interior comfort and safety. The F-350 was based on the one-ton chassis, whereas the F-250 was based on the 3/4 ton chassis. While relatively similar to the F-250, the F-350 featured heavier-duty front and rear (full-floating) axles, eight-lug wheels, and heavier springs, providing a greater GVW rating. Configurable body options were only available with a long pickup bed, with the availability of a regular cab, two-door Supercab, or four-door Crewcab. Cabs could be optioned as a two-wheel drive or four-wheel drive drivetrain. Engines offered on the F-350 were three V8's, two gasoline-powered, a 351cid (5.8L), 460cid (7.5L), and a turbodiesel 435cid (7.3L) marketed as a "Powerstroke." All gasoline engines were equipped with Electonic Fuel Injection (EFI). Power was sent to a single rear-wheel (SRW) or dual-rear-wheel (DRW) or "Dually" axle through a 5 speed manual or a 4 or 3 speed automatic. Trims offered included the entry-level Custom (later XL) and mid-level XLT. The Ninth Generation F-350 ceased production in 1997 and the model series became part of the F-Series Super Duty line of pickups.