Bill, The older B/RB (as well as Hemi) engines have this "step" I believe you are referring to. The newer B/RB (as well as A and Hemi) engines have the straight thru holes. Different holes for different plugs. Best regards, Richard --- In Chrysler300@xxxxxxxxxxxxxxx, Bill Huff <czbill@...> wrote: > > They said those were for stepped freeze plug > holes. The B/RB engines just have plain holes, > did they still work ok? Do the plugs have a > flange to keep them from going in too far? > > I never had a problem with my RB engines,I use > hardening Permatex, but I do dread trying to > install the dished plugs in my 392. I have heard > a lot of horror stories about them popping out. > > Bill Huff > > At 4/12/201009:41 AM, Louis M. Barrie wrote: > > > > > >Mark - this happened to me and Big Yellow - over 5 years ago on an early > >break in run. I used the milled stainless steel plugs from Hot Heads > >Research and Racing: > > > ><http://www.hothemiheads.com/main_caps/freeze_plugs_stainless.html>http://www.hothemiheads.com/main_caps/freeze_plugs_stainless.html > ><http://www.hothemiheads.com/main_caps/freeze_plugs_stainless.html> > > > >Never had a problem since - this is a notorious problem with the 413. > > > >Louis M. Barrie > >West Hills, CA > >Home of Big Yellow > > > >-----Original Message----- > >From: > ><mailto:Chrysler300%40yahoogroups.com>Chrysler300@xxxxxxxxxxxxxxx > >[mailto:Chrysler300@xxxxxxxxxxxxxxx]On > >Behalf Of Mark Souders > >Sent: Sunday, April 11, 2010 6:08 PM > >To: <mailto:Chrysler300%40yahoogroups.com>Chrysler300@xxxxxxxxxxxxxxx > >Subject: [Chrysler300] Freeze out plug > > > >This morning I was driving my 300H and three miles from the house, I pulled > >out from a traffic light, and something went POP. Then there was a white > >cloud of smoke coming from under the car. I pulled off the highway, opened > >the hood and found that a freeze out plug removed itself from the left head. > >With the help of a few gallons of water, I nursed it back home. Now I need > >to know what size plug goes into that hole, what kind to get, and how do I > >install it so that it won't escape again? The FSM is very evasive about this > >subject. This plug has been in the head for 8 years and 13,000 miles, not > >rusted out, the whole plug is gone, and the paint is chipped off the upper > >control arm. I'm glad it didn't happen a few hundred miles earlier, when I > >was in Myrtle Beach! > > > >Thanks for the help, > > > >Mark Souders > >300H > >Mohrsville, PA > > > >[Non-text portions of this message have been removed] > > > >[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 To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@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: 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: http://docs.yahoo.com/info/terms/