I pull a trl. with my bronco & it now has a roller camshaft you are telling me that my bronco is better off with a flat tappet cam ?? I can tell you my engine crank's much faster w/roller, smother running w/ roller engines have less friction w/rollers , than flat tappetsI just can't figure out where flat tappets are better than my roller ??????? Pulling a trl. or not !!!!!

Don