I have had a buick for 15 years, I have blowed a few head gaskets . I'm well aware that there is no actual bulletproof gasket. That's just how are you RJc advertises their head gasket. It works really well.
I was installing new chip Tt 110 race 24 degrees of timing. After install I noticed my TPS was a little high .48-4.80, I ajust to specs on chip sheet. I was in park reved motor to about 4,500 rpm and showed 7.1 knock. Did it again it jumped to 13.1. (I have 110 race fuel in car). Drove the car...