Yes, was done.  Sorry for the memory lapse (Geez, don’t get old).

6 VOLTS/POS. GRD. NW INDIANA

This likely must be an issue I dealt with in the past, but has totally escaped my memory.  The ‘G’ heads I installed on my back-up motor wouldn’t have been left uncompleted, and I’ve always intended to retain the 6V system.  I’ll have to double check that detail wasn’t overlooked though, by trying to screw in a 6V sender (been putting off the engine swap BTW for many years, but since orig. block’s 10W-40 oil pressure is now barely keeping the 10#-per-1000rpm minimum, it probably won’t be long).

6 VOLTS/POS. GRD. NW INDIANA

Looking at the Ford parts catalog, there were not separate part numbers for the left and right side cylinder heads.  This leads me to believe that the bungs and freeze plugs were not already installed in the replacement heads and were either included loose with the heads or ordered separately.  It was then up to the installer to put the freeze plug and/or bung in their appropriate locations.

Assuming the 113 heads originally came with a ¼” NPT bung for the temperature sending unit, the dealer likely just changed out the existing bung to the correct 3/8” NPT bung for installation on the earlier engine.

Lorena, Texas (South of Waco)

Paul, if you reread Daniel Tinder's last post, maybe you'll have a better understanding of mine.

Sorry if I contributed to the confusion. 

I changed the bungs while the heads (and intake) were still on the engine and the engine was in the car.Not really difficult, but I did have to move/remove some of the gas pedal  linkage to do so.  I used the tool from CASCO to remove


54 Victoria 312;  48 Ford Conv 302, 56 Bird 312
Forever Ford
Midland Park, NJ

55blacktie -you are confusing two different people The original poser is not the one that mentioned the 113 heads..stbart had the original question, Daniel Tinder mentioned the 113 heads

quote]55blacktie (6/25/2023)

---

[/quote]



54 Victoria 312;  48 Ford Conv 302, 56 Bird 312
Forever Ford
Midland Park, NJ

Now I'm confused. The 113 heads originally would have used the smaller 1/4 NPT 12v sender. You said that you had screwed in the 6v (3/8) sender with no problem. Unless I missed something, that means the bung was swapped from 1/4 to 3/8, then swapped back to 1/4, and now you want to swap back to 3/8. Am I missing something? Although the 55 & 56 senders are both 3/8, the 55 is 6v and the 56 12v. 

Concours parts sells the bung and a tool for removing the old bung. I just used it to remove the bung from a G-head. Very easy to use, no problems. As Ted said, just put a little sealer on the new one and tap it in.

They either used a thread adapter or swapped the bung.



Lawrenceville, GA

This thread has me confused. My 6V/292 ‘55 T-Bird has replacement (post ‘56) 113 heads.  I have had to replace the sender before (NOS/6V part), and it screwed right in with no issues. Does that mean the Ford dealer mechanic who changed heads back in the 60s/70s must have used some kind of thread adapter?

6 VOLTS/POS. GRD. NW INDIANA