What size are the thermactor plugs, or expansion plugs that go in the thermactor ports of a D3VE-A2A engine head for a Ford 7.5 Liter 460 V8 engine? Or can anyone give me a direct link, or part number to where I can find a set? Thanks guys!!!

 

They are .666"
You can get them at NAPA.

 

Thanks man!

 

380393-S .. Plug-Cup (plug thermactor hole in head) 43/64" O.D. / Obsolete

1973/79 460 / Pic: Listed below D6AZ-6049-B