Yes I was at about 5,500 RPM when this happened. Ok I had a few minutes to work on the car yesterday. Pulled the plugs on the driver's side and stuck a zip tie down in each cylinder to make sure they were dry. They were. Did a compression check and all checked good at 180 lbs so the drivers side does not seem to be the problem. Checked all the passenger side cylinders for cracks and found none. At this point I think I am going to put it all back together and assume it was the passenger side head gasket failure. Unless you guys have any other ideas?