Answered my own question.* Regular, normal threads.* I borrowed a "Hillbilly Impact" wrench, which I had never seen.* It is kind of like a impact screwdriver, but works from the side for minimal clearance situations like the cam bolt by the strut tower.* You just put on your socket, and smack it with a hammer!* They both came loose real easy with this tool!!* Hope this might help someone else....