Introduced for 1980, Ford's full-size pickups came in three series: F-150 for 1/2-ton capacity; F-250 for 3/4-ton; and F-350 for 1-ton. An F-250 Heavy Duty model also was available. Ford had dropped Flareside trucks with flared rear fenders in 1988, so all F-Series models were called Styleside. The short-bed F-150 had a 116.8-inch wheelbase and 6 3/4-foot cargo bed. A long-bed regular cab rode a 133-inch wheelbase, holding an 8-foot cargo bed. SuperCabs rode a 138.8-inch wheelbase with a 7-foot bed, or 155-inch with an 8-foot bed. Base engine was a 4.9-liter inline six, with a selection of V8 options. Antilock rear braking was standard. Available 4-wheel drive was an on-demand, part-time system. Automatic-locking hubs were phased-in starting in 1989 on F-150 models. Bench seats were standard, and SuperCabs had a folding rear bench. Front captain's chairs were optional, while SuperCabs might have rear jump seats.