So while I was looking into why I had an oil leak near my rocker box, I discovered some stripped threads in the longer bolt close to the exhaust push rod. I begin my first attempt to clean it up with a tap for the 5/16'' threads and as i remove the tap, the threads come out coiled as if it were heli coiled in! I've never used a heli coil myself but I thought those only work when they go inside an already threaded hole.. if you see the photos you can see that the hole had no threads just silky smooth aluminum. Provided a normal hole photo as well. Anyone ever seen anything like this? Click image for larger version. 

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