Switching to twin stick

[Dave's1971]

Hello! My ‘71 has a AX15 with an Advance Adapter (AA) kit. Still have original single stick.
First question: The bolt that holds the stick in place on the AA continually backs out over time. If I tighten it any more the the stick won’t move.

Second question: Given the problems with original single stick, (very difficult to shift to hi-range 4wd) I’m thinking of installing a twin stick. Can the twin stick be installed with the tranny and trans-case still in vehicle?

Thanks. Hoping some of you have done this.

Thanks, DaveM

 

[JB Fab]

If the shoulder bolt tightens on the shifter, then the shifter pivot it too wide for the shoulder bolt. If you are using any washers, remove them for clearance. If the shifter pivot is any wider than 2.00" the shoulder bolt will bind, you will need to grind/sand/file a bit off of the pivot to create clearance. the shoulder bolt needs to be tightened all the way without binding on the shifter pivot.

 

[JB Fab]

Regarding question 2: If your 71 has the stock "T" type D20.... Yes.....

 

[Dave's1971]

Yes, T handle.

 

[Dave's1971]

Oh, and there was a spacer which was in the way of tightening the pivot point bolt after all. Thanks, fixed that. Now, as stated in another message… it just won’t shift into 4 high. Everything else works correctly. Ideas about that?
Thanks again!