What is the curb weight of a 1978 Ford F-150 Ranger?

Sources have cited varying weights ranging from approximately 4,200 lbs to 5,300 lbs.

1978 Ford F-150 Overview (courtesy of Cargurus.com):

The 1978 Ford F-150 was the first to be offered in the luxurious Lariat trimline, as well as the Custom, Sport, Ranger, and Ranger XLT trims. Some 1978 F-150s came off the line with a robust 169-horsepower Cleveland V-8 engine; such output came at a significant cost to fuel economy, though, so the 1978 Ford F-150 pickup also featured a 385 V8, a 460 V8, and a straight-6.

Ford's F-series topped the market for the first time in 1978, securing its position as the best-selling vehicle line in America, a status it would maintain for years. The popular trucks attracted a following from off-road enthusiasts as well as buyers seeking a sturdy workhorse for farm or ranch use. Tuners were drawn to the truck's muscle and the variety of configurations available for the bed, tonneau, and cab (including a supercab extended crew cab option for styleside models, as well as 2-door and 4-door setups).

Reliability is the hallmark of the rugged 1978 F-150, and you will find a surprising number of these vintage models working hard (and playing hard) today.

Many people become confused by the terms "curb weight" and "gross vehicle weight."

The curb weight of a vehicle is the weight of the car with all standard equipment and amenities, but without any passengers, cargo, or any other separately loaded items. Thus, the curb weight is the amount that the vehicle weighs when it is resting on the curb and not in use. This is generally the standard weight that the manufacturer assigns to the car.

The gross vehicle weight is the combined weight of the vehicle and all passengers and cargo, in total. Gross vehicle weight is especially important if you are driving in a sensitive area or if you are carrying exceptionally heavy cargo. Gross vehicle weight is particularly significant for truck drivers, who may be transporting large quantities of cargo that could considerably alter the total weight of the vehicle. - See more at CarsDirect.com.