auto shifter hook up help please

Can someone tell me the prcedure for fabricating the hook up from a shifter to the transmission

The shifter is a heavily modded Lokar floor mount swapped over to make the arm on the right and the trans is out of a lexus

I am scratching my head as to which end to start at do I leave the original lever on the trans and fab a lever at the shifter end to suit and if so how?
Or do I make a lever at the shifter end and fab the lever at the trans end to suit

As I have manualised the auto I only need the shifter for PRND

I am having trouble getting my head around the variables

Finally bolted the body down for the last time today not a job I want to do again in a hurry I chased the job round the garage all day everytime I put a shim where I thought it needed it I was wrong

 

If you could show the shifter arm on the ****** it would help, but what I did on mine was fab an arm off of the shifter with multiple holes so that I could adjust the throw. So my recommendation is to build the shifter to the ******. After I got it all figured out I made a final arm and got it all mounted up and it gave me 6 inches of throw through all gears with a 36 inch shifter arm. I don't know if this helps, but good luck.

 

Heres what I have to work with I can't get my head around the detent differances maybe I can't use this shifter with this gearbox

first pic is the shifter out of the car second is the arm on the trans

 

Having never experenced a Lexus anything, I would start by making sure the "park" and "low" are reached by the movement in the same direction. In other words, if park on the trans is reached by moving the lever forward then the shifter will also have to reach park by moving the lever forward.
Once that is accomplished, you fab linkage that places both in park at the same time. Then its a matter of both reaching drive at the same time. This can be adjusted by having a longer or shorter distance from the pivot point to the connecting hole for the linkage, I would make these adjustments on the shifter if possible.

A shorter distance from the pivot point to the linkage hole on the shifter will compact the shifter pattern. A longer distance will spread out the shifter pattern. A 1/2" change in the distance makes a big difference in pattern spread. Make any sence? Gene

 

There is a really simple way to do this that I learnt from an old Rodders Digest article ...


1. Put the trans and the shifter in Park.

2. Tape a piece of cardboard to your shifter arm on the trans.

3. Make a temporary shift-rod that is the right length to connect the shifter arm on the shifter to the shifter arm on the trans. A strip of cardboard would do if it is short. Punch a hole in it and attach it to the shifter end, and punch a smaller hole in the other end.

4. Put a pencil through the small hole at the trans end and draw an arc on the piece of card taped to the shifter arm on the trans.

5. Put the trans and the shifter into 1st (or D if you only want to shift that far)

6. Repeat step 4

7. You will now have two intersecting arcs on the cardboard. The intersection point gives correct length for the the shifter arm on the trans.


One problem I have found swapping shifters in the past is that some transmissions have a bigger step from Reverse to Park than others, so the detents in the shifter don't line up. You can test for this by putting the trans and shifter into reverse and draw another arc. if it intersects at the same point, you are good to go.