If its the head you'll notice things like lost coolant, low idle, low oil pressure, rough running, steam out of the tailpipe.... etc.
I have a feeling it may be smaller than that guy's "6 inch crack"
I have noted no coolant loss, idle is at about 700rpms, steady, a little rocker clatter, I get moisture dripping from the pipe but no smell, it runs good and has power.
That said the squeeeeeeee sounds just like that guys and it is EXACTLY the same. Also I failed to mention, I am the
guy ALL the bad **** happens to.
Tomorrow Ill pop the oil cap and look for a crack, if none I will pull the valve cover and maybe yank the intake to check that gasket.
The noise is impossible to pinpoint its location. It sounds like the dead center of the engine but if you pull the cap its no louder. It is louder than my radio will go. Its REALLY loud. Like a smoke detector under the hood.
I am on like 7 forums. This one kicks ***