First I'll give you some background. Its a 1988 Chevy 1500. 2WD Stock 350.

This was just my puttin around truck so it was in rough shape to begin with.

Anyway heres some background. Motor had bad valve seals, so it burnt oil. It also was starting to miss out some. It would also jump from normal temperature a little bit but then quickly fall back down to normal.

So the other morning I was driving to work and in a span of less then a mile, it jumped from its normal operating temp, 210 degrees, to completely overheating. As in filling the gauge. So I quickly pull over, shut her off and pop the hood. Just right of the heater hose, seemingly where the head meets the block, it was spraying antifreeze all over the place. I figured if I cracked the head or blew the gasket it would be spraying oil as well. My father thinks it might just be a bad hose, but he has yet to see the engine.

Any ideas on what happened?