so bought boat end of last summer with a 460. 1/2 hour out water in oil! I had screwed up with hose on motor,kind of swamped the back of the boat ,thought those could have caused it ,changed the oil,tried it again,still had water in oil as well as some other problems.pulled engine ,made some changes to set ,cam & intake .put the boat in the river to breakin the cam 20min @ 2000 on the trailer,10 min on the river up to about 4000-4500 rpm .....coffee milkshake for oil
I've search this site on this topic possiblities seem to be crack ,wrong angle on intake to head, headers.
any suggestions,tests before pulling this thing out again. Thanks