Most likely a head gasket, or possible intake manifold gasket.
But you will have to remove the head to find out, if you try a pressure test and gasket is bad, you can force coolant into cylinders and hydraulic the engine.
You will also have to check if head is warped.
Early Toyota engines were cast iron block and aluminum head, it is very rare to crack an iron block.
The coolant dripping down the oil pan could very well be coming from head and running down side of block.
Monday, September 21st, 2009 AT 9:03 AM