Update:
OK, so it's all buttoned up>
Before I took it apart, I drained the oil and put in new oil ( not too much coolant in the oil, though).Than after the swap, I ran the oil briefly, then drained it and put in new oil, then ran for 10 min and drained that, and put in new oil and filter.
There is still an infinitessimle (super-tiny) amount of "condensation" along thetop edge of the dipstick. It almost looks like leftover condensation from inside the dipstick tube. But there is absolutely no water bubbles in the oil itself on the dipstick.
It doesn't appear to be using water (which I will keep a religious eye on anyway!), and the temp is holding steady right above 180*. I am, however, going to replace the fan clutch today, as mine wobbles and might contribute to overheating.
1.) Should I change the oil again to try to get rid of any more possible oil? When?
2.) Do you think lack of a dyno tune for proper a/f ratio could've caused head gasket-blowing conditions?
Beacuse otherwise, it's a low-horsepower, non-boosted, newly-gasketed motor that blew a gasket on a mid-13 sec. pass.
Any way to get some insight as to how it happened so it doesn't happen again? Perhaps the "blow pattern" on the gasket might help diagnose??