There wasnt coolant loss that i could tell, but while after a long drive on the highway the idle was really rough, i did a compression, then leakdown test and could hear air coming out the tailpipe on #4 while the valves were closed. Im pretty sure i over revved it, from california to kansas, i finished the project in a hurry and was too cheap to buy an aftermarket tachometer, and pyrometer though i drilled tapped and plugged the exhaust manifold for one. I pulled the head on a trip back to kansas and took it to a long standing machine shop. They just called and said there was a bunch of cracks and the head was no good