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Message: [QUOTE="Wayne, post: 1179775, member: 863"] I know you asked Morgan, but perhaps I'll give my $.02 anyway, then he can elaborate or correct me. All a stud will do is clamp harder than a bolt. If caps are moving due to the block flexing under high torque applications, then they should make it harder for that to happen. It hasn't been happening on anything of Dan's I've seen. Definitely not on the stock, and near stock stuff I see regularly at the stealership. So if caps aren't moving now, going to studs won't make a difference. Going to studs will do nothing to improve rigidity of the block if the block itself is flexing, but the caps are staying put. As far as "crank flex" is concerned, it's probably a sloppy explanation of block flex potentially causing the crank to get bound in there when it flexes, making the main journals no longer line up. To control block flex, it needs reinforcing material to hold them all together, such as a girdle or bedplate. I m not hating on anyone by any means because I see nothing wrong with a good main stud. I'd like to see failures first where the caps move to personally justify the expense, but again, nothi g wrong with stronger parts. The crank on the 6.7's is actually pretty stout. Main journal diameter is about the same as on a 6.0, and rods are a larger diameter. I'll post a pic in a minute comparing the two. Anyway, I just don't see broken cranks now job 1 manufacturing flaws are a thing of the past, and rare at that. [/QUOTE]

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