Gear change selector question

[SDeMocko]

Carrier folks,

I’m not sure anyone had a concern about this other than me but, I did find that a carrier specific gear change hat would bolt up ok to a non carrier trans housing. I know that wasn’t what I had originally been asking about when I started the thread, but it is still good to know info. I know this pic shows a lot of non original stuff going on in my engine bay like the 8BA engine to the wrong color trans and on and on….. Thanks for the loan of the top hat Mike.
I did have one question. Does anyone know what the thread pitch is on the top of the gear select shaft? I have measured it to be 18 tpi but that is a bunch odd so I was looking for conformation. I made up a nice nut ½”BSF but the shaft is not 16pitch. Thanks for the help

PS. I know the nut is listed in the book as 1/2" BSF but the nuts I made using that tap are off.

Stephen DeMocko
’44 MKII
So Cal, USA