towing 8000lbs with 2003 f 150 4x4 with 5.4 triton Hi Klolsen, welcome to the forum. Getting to your question; Gads I sure hope so! Cause I pull my 31' 13900# fiver w/my F250. I belong to a club here in Oregon and 7 or 8 of us all got pretty much the same thing. (F250's, Duramax's, Ram cummings and one Ram dullely, pulling similiar size 5th wheels). Between all of us we put on some pretty hellatious miles with nary a problem on some pretty steep up ... and down roads.