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Message: <blockquote data-quote="Silver95bird" data-source="post: 1427995" data-attributes="member: 21743">I put all the info in a spreadsheet so I could see it all in one place  in a way my mind could try to make sense of it, but it just doesnt add  up. The specs seem like they're a bit all over the place. I am  beginning to wonder if a significant part of all of this isn't just a  huge case of a lack of QC on the manufacturing end. Definitely I'll be  checking what cams I see in the future. The only way to be sure is to  get more data. I wonder who made these cams for Ford. The big bummer for  me is that the bigger intake lobe cams are all Windsor cams with the  Spin-o-matic sprockets on the end of them. I suppose I could weld the  sprockets if I really wanted to use them though. I'm also  surprised that the lifts vary sometimes as much as the durations do. The  ramp angles between the adv. and .050 seem to vary a bunch too. THis  sure would explain a bit more of the whole factory dud/factory freak  thing, especially added to the crappy +6/-6 variance in the cam gears. I  was looking for a pattern, a trend, but it just looks like a roulette  wheel. Kind of sad really.</blockquote>