Looks to be

I'm not sure where to go from here.

I believe I have the correct parts.

Everything appears to be adjusted correctly.

but NO KICK-DOWN

All shift points are within spec under light throttle.

Under full throttle at low speed no kick-down.

Start in 1 and floor it slap stick moves to 2nd by itself prematurely. Looking at the underside everything looks right. I'm perplexed.

I'm in the DFW TX area.

If anyone knows of someone who can help sort out these issues, please let me know.

The shifter is moving by itself? You have broken motor or trans mounts.

How do I verify/where do they usually break?

Next steps are

At WOT disconnect the linkage at the transmission and verify the arm can't move any more.

If it can then the linkage is getting bound up or is hitting the body

If it can't you either have a transmission issue or a manual valve body.

Also if the slap stick is moving by itself that's an issue like he said

Here’s a pic of an NOS rod, part number 3577529, with the correct length.

I have been following this post hoping to learn something as deciphering these rods can be really difficult. I have posted a picture of what I tagged a while ago as a small block kick down rod, but I don't really know what the actual application is. Compared to the one above, It is pretty much the same length, but seems to have a little different bend locations.

The NOS kick down rod part number 3577529 in the previous post, according to the parts books is the correct part for the 340-6 AARs and T/As.

What's is interesting is that the part number 3577529 carried in to 1972 model year and was found on B-Bodies with a 318-2 engine.

440/383

So many choices

Does anybody reproduce the AAR/T/A rod?

Yes and they are $$$. Year One, Herbs, aa and a etc. $350+

Take off your one piece rod and compare it with that one NOS Rod Picture posted here if you want

The $350 reproduction kit is for everything , and if your one piece rod is the correct one installed compared to that NOS piece , its time to look at other things like your internal valve body

Next

While your under there by the transmission

Take the throttle lever on your transmission and move it backwards within its full travel with your hand

You should feel some resistance as you move it rearward , probably around halfway of its travel , from the internal spring within the valve body and see how it feels

Here’s my kickdown rod

We are still waiting for you to tell us what the kick down lever on the transmission feels like.

The rod you have looks like the NOS and if anything it might be too long by a 1/2" - so I don't think it is your issue

You also have not answered the question of if your slap stick is moving on it's own from 1 to 2

I must have missed it. Feels like how? It does move by itself from 1-2.

Put the car up on stands and use a jack under the tailshaft and jack it up to see if the trans mount separates, then do thd same on each side of yhe engine. If it's shifting by itself you almost have to have broken mounts or bolts missing.

Exactly!

If this is happening all the geometry goes out the window

The rod he pulled off is not the same as that NOS one in that picture unless

Unless my eyes are deceiving me , it looks to Bee almost an inch short , and then look at the 22" mark on his where the bend starts compared to the same 22" mark on the NOS 3577529 it stays straight thru 23 1/2" then the bend starts

Anyways

Let’s compare rods - Lol

Here’s some closeups showings overall length

Also looks like the NOS rod is linear and flat where mine is twisted and bent upward from laying flat. Since it’s all about geometry I can’t help but think all the bends and twists in mine have a negative impact on performance. The one I have is short but not by 2 inches mentioned previously. More like half an inch, but I wonder about the bends and linear movement. Anyone know where I can get a new NOS one like the blue one?