I bought a 2004 F150 about a month ago and it was lifted but not levelled. Is there a benefit to levelling the lift?

 

I think that levelling any truck is up to the individual taste of it's owner. Some people prefer the look of a level truck. Truck manufacturers all seem to set up their trucks so the rear is higher than the front to allow for sag when the truck is loaded. I don't believe that there's any benefit to a leveled truck.

 

No benefit from leveling, actually a downfall (you'll be nose high when towing/hauling). People level the truck for looks but I actually prefer the look of having a little bit of rake.

EDIT: actually yeah what stevelord said, although the ground clearance part is partially debatable lol

 

Benefit is to for bigger tires and raise front ground clearance.