The Camshaft Spec "lobe Center" What Does It Mean As Far As "effect" On Performa

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Have had a E303 cam for 6 years with a 110 centerline no problems,if you are not willing to accept a lumpy idle then why change cams,especially any of the alphabet cams,I seen on a post elsewhere in here how great the F303 cam is and it idles rougher than a E303 and it's centerline is 114,so back to what I always say "it is your preference and how much loss of a smooth idle you can tolerate"