I recently purchased a set of the Comp Cams Elite and I am very unhappy with them, they failed on the 5th dyno pass, link bar broke in half on one pair, killed the pair and the 55mm cam. Link bar on every remaining pair is bent. Total waste of $1000. We got away from the 829's a few years ago, the needles were always failing. For the valvetrain weight and springs of our hemi SS stuff, only the Jesel keyway and Jesel dogbone have lived, 5 years+ on same set, no failures. Comp 829's wouldn't last 20 runs.