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Thanks Unit....you can always be counted on for breaking things down so it can be understood easier. I used the wrong choice of words, "big boy" cam. What I meant was getting away from the Ford letter off-the-shelf cam, and getting something like a AFM custom ground cam or something like it.....how are the Crane xtreme cams? Why does Ford have the same #'s for intake and exhaust anyway....and why don't others make cams that way? Thanks again.