[68 BlueBird]

In case anyone's interested, the head gasket failure was due to a bad gasket. There was an obvious defect in this gasket. I should have caught it when building the motor, but didn't. Now I'm paying for it. There's an area of the gasket between the cylinders that wasn't cut/folded over/pressed correctly. It was barely touching the head, as seen in the pic. It finally gave out. I can't believe it lasted as long as it did. These gaskets are crap and obviously why Butler quit selling them. The good news is that all the parts should be here tomorrow, so I should be back up and running Saturday.