I got a 1988 5.0L engine out of a F-150 truck. When I took the engine apart I found a flat tappet hyd. cam. I thought all late model 5.0 engines were hyd rolloer cam equipped. Now I am woundering if this is a roller block. My plan was to make a sweet street motor out of it. Dose anyone have info on the 1988 truck block?