Jim here is a couple pics I took last night...I had talked to brian and couple other people as I was concerned about this due to possible too much lobe issues and uncovering the cutaway....at full lift the oil band cutaway is still down in there a good ways(see ruler pic/black line is where cam was at full lift)! I have a world aluminum block RB(race version)... my lobes are .485/.471 hope this helps... pics are from iphone so hope its clear for ya