Anyone have any idea why they did this ? On exhaust manifold? Later cars just use regular bolts , coarse . Think GM is that way too . Chrysler seems to have had a fascination with fine threads often in strange places like cross member to frame .or carb mount studs . Maybe an edict from Walter way back . They are stronger and less torque for same clamp force . But strip or cross thread easily .lots more parts , cost with studs . Must be a reason ? I remember some had brass nuts on fine ends on earlier exhaust too .that is good . I have several that snapped ,( they seem to be hardened steel) We got the remains out ,I am thinking SS bolts , forget all this . With sealer so it will not seize in head, as the studs do ; big fan of Rectorseal plumbing sealer , oil based . Anyone have any thoughts on this ? Sent from my iPhone ------------------------------------ Posted by: John Grady <jkg@xxxxxxxxxxxxxxxxx> ------------------------------------ To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx To unsubscribe from this group, send an email to bob@xxxxxxxxxxxxx or go to https://groups.yahoo.com/neo/groups/all/manage/edit For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm For archives go to http://www.forwardlook.net/300-archive/search.htm#querylang ------------------------------------ Yahoo Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Chrysler300/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/Chrysler300/join (Yahoo! ID required) <*> To change settings via email: Chrysler300-digest@xxxxxxxxxxxxxxx Chrysler300-fullfeatured@xxxxxxxxxxxxxxx <*> To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo Groups is subject to: https://info.yahoo.com/legal/us/yahoo/utos/terms/