Thanks to all of you for your reply---I did contact Equus and they informed me they had an adapter. Actually, they have a kit-9852--about 11.00 from Equus and 14.95 from Amazon.  The kit had the 3/8 that fit the block and then a female thread---5/8-18.  Who the h____ every heard of a 5/8-18? Well, it is installed and not leaking.

pintoplumber,

That’s very interesting. Being from the electrical trade, I’m familiar with our pipe fittings. Typically tapered, (NPT) on the male, but often straight on the female. As any electrician who used one of our couplings on a water line can testify. They leak. Guilty.

I went and looked up MIP, it says they’re good for higher pressures. I did a lot of industrial work, but never heard the term from the fitters. I did see some real high pressure stuff welded after assembly. Comments? On lower pressures will they interchange?

Just for my general sum of knowledge, never too old to learn.

miker
55 bird, 32 cabrio F code
Kent, WA
Tucson, AZ

In the plumbing trade, MIP stands for male iron pipe. Which is a tapered thread. Perhaps that was what was referred to?

  Dennis in Lititz PA

If your bushing is not an OEM replacement, you might have difficulty finding the correct size sender. OEM-size bushings are available for Y-blocks; there's even a tool available for removing the "bushing" from the head. I removed the bushing from my 57 head and replaced it with a 55 bushing. My 55 Tbird will retain the original sender & gauge and will also have an Autometer electric gauge & sender; the sender will be installed just near the thermostat (thanks, Ted). 

If you have difficulty finding the correct bushing, the Tbird suppliers have them. I think I bought mine from Hill's. The outside diameter is the same for all, only the thread size is different. 

The sending units are NPT.  The factory installed bushings are also NPT.

My understanding is MIP is a straight thread while NPT is a tapered thread.  If the replacement bushing has a threaded hole that is larger on one side than the other, I would call it NPT.  To date, I have not seen a replacement bushing that was not NPT.  When I make new bushings from scratch, I thread them with an NPT tap.

The side of the bushing with the larger sized hole would be facing out when installing the bushing.  If the bushing threads are truly MIP, then a NPT threaded sending unit will screw into it but sealing might be compromised. 

Lorena, Texas (South of Waco)

i have a new Equus 7232 that I am trying to put in a 56 292/312.  I know the theaded hole in the engine is 3/8 MIP-doea anyone know what the thread size of the temp sender? Thanks.

The Ford bushings are either 1/4" or 3/8" pipe threads, so to put an 1/8 sending unit in would require a bushing to install it, which would make the sender sit higher.  Of course, a head bushing could be fabricated with 1/8" threads in it.  

John - "The Hoosier Hurricane"

Just wondering, why would you want the sender on the right bank?

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I looked at pass side location, near as I can tell there would be room for a 1/8 pipe sending unit (less than a inch tall when treaded in) , depending on how deep bushing  is pressed in.

No, the distributor is there.  Joe-JDC

JDC