FYI Bill, the windbroke 216 that was in my 49 with 3 on the tree and 4:11 gears was most confortable at 40-45 and would run there all day long (for as long as the oil lasted), would do 55 for long stretches and could hit 65 for the rare pass. A freshened up 216 with good tight bearings and seals would have no problem running all day at 55-60, with a bed full of whatever too.
Good to know as I’m not looking to make any land speed records just pep it up within reason if possible