Cam bearings have to be in correct orrientation as do the rocker shafts and main bearings. Have also had machine shop fail to put cup plugs back in the rocker shafts. The oil passages block and heads need to be carefully and laboriously cleaned out with special long shaft wire brushes that are specifically designed for the purpose..All the bearings, main and cam, installed correctly with the oil passages cleaned, rinsed and wire brushed and rinsed again and you should have no problems. Hot tank and air blow will not properly clean oil passages. Furnace cleaning won't work either. Passages I think are sufficiently shown in factory manual so make sure to gain access to all the passages and clean properly.. Only way to clean rocker shafts I think is with cup plugs out, the proper long wire brush and then new cup plugs installed BTW. Brushes; mobile tool guys have them or on line Tool Warehouse.com. Not a lot of money. Basic oil pressure check OK? ever since i first fired my hemi ive had trouble with getting oil to the rockers. sent it back to the motor shop to re-clean the rockers. found crap in the oil passages not blown out after the hot tank. the dino went without a hitch but after pulling the valve covers found valves sparcely oiled. going to have it torn down tomorow first to see if the holes in the cam bearing is lined up in the block and possibly sending the cam out to be turned so the heads will get oil on the whole rotation of the cam. has anyone had this problem and what was the remedy? **************Planning your summer road trip? Check out AOL Travel Guides. (http://travel.aol.com/travel-guide/united-states?ncid=aoltrv00030000000016) [Non-text portions of this message have been removed] [Non-text portions of this message have been removed] ------------------------------------ To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm For archives go to http://www.forwardlook.net/300-archive/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: mailto:Chrysler300-digest@xxxxxxxxxxxxxxx mailto:Chrysler300-fullfeatured@xxxxxxxxxxxxxxx <*> To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/