Early Core 4L80E shifter arm stud size?
 

I got a Jake's 4L80e transmission, early core, and it did not come with the nut that goes on the shifter stud. I thought maybe the shifter linkage kit would have this, but it does not have one either. Does anyone know the size and pitch of the nut that needs to go on this stud to hold the shifter linkage on the stud?? Is there anything else I might need like washers or just the nut?

I have been searching for about an hour and getting zero results. Also tried calling both Jake's and another forum sponsor, but I am guessing due to it being Saturday, they are both closed. Trying to get this all installed today.

Well after measuring it with calipers, it seemed like it was going to be 3/8" but I bought some m10x1.25 and m10x1.50 nuts as well. I can confirm that it is not in fact 3/8" it is m10x either 1.25 or 1.50. Not sure which was which, but it was most definitely one of the M10 nuts as the standard ones I got were stainless and the ones metric ones were not. Hopefully this helps someone on down the road.

Glad you got it done bud. Did you contact Jake about thr missing bolts?

Nuts* For some reason I cant edit my post.

M10x1.50 is the nut thread size.

Nah, I tried contacting them for the size, but they were closed. I assume they do not send them because they think you will use the ones off your old trans. In my case there was no old trans.