That will work as long as you never start the engine. It sounds like you're building a trailer queen, so just push it on and off the trailer, or use a winch.
PCV= POSITIVE CRANKCASE VENTILATION
This means you need a source of air INTO the engine- - -the hose from the air cleaner to the valve cover, and an outlet- - -from the road draft tube/oil filler pipe to the PCV valve. Blocking off the airflow will result in crankcase pressure pushing oil past gaskets and seals everywhere. To really avoid leaks, just don't put any oil in the engine and make the truck a static display piece.
Jerry
