305 V6 timing chain/Water Pump Question

[Alaska_Ryan]

So I was riding along in my 69 GMC, which has a 305 V6 engine. I just got it running again this past June after an engine fire. So, the entire truck shudders and it sounded as though someone threw a chain at the truck. My first though was the drive train broke free and I was dragging it along. I pull over and I am dumping coolant all over the road. When I opened the hood, coolant was dripping from everywhere. When I limp it along, the engine and entire truck just shakes.

So does anyone have any ideas?
Did my timing chain break or jump, thus the shuddering? Seems to be a bit much for a bad water pump....