Height above bed rails

SoCalDesertRider wrote:
If you have 1/2" clearance above the bed rails now, laying a sheet of 1/2" plywood under the camper would give you an inch of clearance and be fine.

The more important clearance to be concerned with, is the gap above the cab. If you have too little clearance there, the camper overhang hits the cab roof when driving on uneven terrain. The bed doesn't flex so much to need alot of clearance with the camper.

The overall bed/cab twist is much more and why the cab needs more clearance with the camper than the bed. This is of special concern those of use who drive off road or on primitive roads alot. On paved roads, it's not a big issue and less clearance is needed.

Absolutely!! The cab clearance is where you need to measure. TC's are usually fine in Ram/Chev but Ford's deeper box requires some additional lift!! I, like many others, screwed a 2x4 frame (flatwise) to the bottom of the TC. Then set it down on a rubber mat.

Also if you are dealing with a short box and short box TC the Ford is 4" longer than the others. If the TC has the rear overhang you'll have to space it back about 6" so your tail lights won't hit. On the plus side this gives you a nice little storage area between the front of the box and TC. I carry a telescoping ladder there.