Have coolant going straight to oil pan. Pour it in, right to oil. Did press. test on all cyl. 90-100 psi. Took water pump off, leak occurs after water reaches pump height, which is well below intake. What if any ideas where the leak or hole is?

 

If it's not a head gasket, it almost sounds like a cracked block or possibly a bad oil filter adapter.

 

Oil filter adapter is below the water pump

Sounds like a crack to me also.Head gasket would only allow it to seap.Not go straight to the oil pan