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1972 F250 4x4, 78 d60/d60, 3.55, np205, 200hp 4bt nv4500
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I was able to find the Cummins 6bt (dodge 5.9l ) freeze plug kit from Melling at a local parts store. Cheaper and easy to find as compared with buying the stuff from cummins or another route.

Early B series (late 80’s/early 90’s) Shop manual said to use loctite 277 for installing freeze plugs. Which I did, 600 miles on the restore and no problems. I don’t know if loctite changed their formula from then to now, so what was spec back then in the manual might not apply now if formula changed.
 
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