How do you know if a 79 f150 is a factory Hi-Boy? I have ran the VIN and nothing was mentioned. Anyone have any ideas?

 

The term 'Highboy' has been used to refer to the 1967-1977.5 model year Ford F-250's, although 'Highboy' wasn't actually a Ford term.

The term 'Highboy' was more of a nickname that came about when Ford switched to a negative arch leaf spring for the 1977.5 model, making it 4-inches lower than the 1977 model.

For a Ford truck to be considered a 'Highboy', it should meet the following criteria:

1. 1967-1977.5 Ford F-250 4x4

2. Divorced Transfer Case (Not attached to the transmission)

3. A Highboy will have (3) driveshafts

4. The front spring pack will have a noticeable arch (1977.5 and later are flat)

5. Rear springs are 2-1/4" wide. 1977.5 and later non-Highboy's will have 3-inch wide rear leafs.

Front axle choices in the Highboy were either the 8-lug Dana 44 or the low pinion Dana 60.

Engine choices were either the 6-cylinder or 360 2 bbl V-8. Steering was either manual or power ram assist.

F-150's built during that time period are NOT considered a 'Highboy'. The F-250's built from 1977.5 and later are referred to as a 'Lowboy' because they sit lower than the 1977.