Cylinder heads Freeze plugs size
hemidenis
Posted 2015-05-16 2:45 PM (#478478)
Subject: Cylinder heads Freeze plugs size



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Hi guys
Does someone know the size of the freeze plugs for the 361-383-413 located in the cylinder heads? Thanks a lot!



Edited by hemidenis 2015-05-16 5:04 PM
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mstrug
Posted 2015-05-16 3:36 PM (#478482 - in reply to #478478)
Subject: Re: Cylinder hears Freeze plugs size



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Its a 1-1/4" plug

http://www.moparchat.com/forums/showthread.php?t=2043

http://www.summitracing.com/search/part-type/engine-expansion-plugs...


1 1/4 in. Steel Freeze Plug fits Cyl.Heads Blocks Auto ... Sealed Power 381-8011 Freeze Plugs Brass Chrysler Big Block Kit

http://www.ebay.com/itm/1-1-4-Steel-Freeze-Plug-fits-Cyl-Heads-Bloc...


For what its worth..555-018
555-024

from the dorman catalog, of all places


http://www.jalopyjournal.com/forum/threads/mopar-guys-big-block-hea...


Edited by mstrug 2015-05-16 6:08 PM
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hemidenis
Posted 2015-05-16 5:12 PM (#478492 - in reply to #478478)
Subject: Re: Cylinder heads Freeze plugs size



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Thanks a lot Marc!
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mstrug
Posted 2015-05-16 6:08 PM (#478496 - in reply to #478478)
Subject: Re: Cylinder heads Freeze plugs size



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I added another link above...may have 2 sizes. marc.
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KcImperial
Posted 2015-05-16 9:43 PM (#478521 - in reply to #478478)
Subject: Re: Cylinder heads Freeze plugs size



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Marc - I think your links are for later model engines with the cup style freeze plugs and not the disc style like Denis needs.
I already posted in the other thread before I saw this one but here's the info again

Napa lists freeze plugs for the 1961-1962 361 cylinder heads
Sealed Power - SEP 3811012
O.D. (Inches) : 1.375"
O.D. (Metric) : 34.925 mm
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hemidenis
Posted 2015-05-17 1:37 PM (#478577 - in reply to #478478)
Subject: RE: Cylinder heads Freeze plugs size



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While doing some research in the old forums I found out that there are different posts with different sizes. Because going to Argentina with the wrong parts is not an option, I had to take the measurements myself, I also checked how Mother Mopar installed the plugs, since my car has some of the originals freeze plugs too..

the sizes are:

1-5/8 for the block
1-3/8 for the heads

My measurement technique was not the best, but with the heads installed there is no room for anything else. The measurement is taken by narrowing in on the approximated standard sizes of the plugs. As the saying goes...a picture is worth a 1000 words.
As a side note, the crawl under the car was not for free, it is going to take a good amount of rubbing take all the grease and oil from my hair, arms and face but what useful info!





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NicksGarage
Posted 2019-10-02 12:20 PM (#588313 - in reply to #478478)
Subject: Re: Cylinder heads Freeze plugs size



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Does anyone know what year Chrysler changed to the cup plugs? Had one fall out of my 300F and when looking for them, everyone shows cup plugs. I'm working with Melling so far to get their application listings corrected but they need to know the year span.

I know '59 is the first year for the 413 but is it the same for earlier 350 and 361 engines?
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NicksGarage
Posted 2019-10-08 5:24 PM (#588586 - in reply to #478478)
Subject: RE: Cylinder heads Freeze plugs size



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Location: Ramona, CA
See my reply in this other thread where posted the ones I got from Melling. Heads are 1 3/8", block is 1 5/8". Still don't know the year cut off but this is for a 1960.


http://www.forwardlook.net/forums/forums/thread-view.asp?tid=72323&...
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