Help! What did I do wrong? (kick down)

[Truckstr]

Morning all. Even though I'm getting everything together to change the TH350 tranny in my '67 over to a 700R4, I wanted the kick down linkage to work. I've been just putting up with the fact that it didn't work.

I pulled the kickdown cable, the bracket that mounts to the intake and the hook-up at the carburetor off of a '72 C10 that came factory equipped with a TH350. The one that's in my '67 was transplanted in.

So, I get the non-functioning linkage (it wasn't hooked up at the carb - and wouldn't fit) off of the '67. I did notice that the vacuum modulator wasn't even hooked up to a vacuum source . I install the linkage and bracket from the donor '72.

So far, so good.

Then I take it out for a test spin. The thing won't shift out of first gear! WTH?

I take the kick down linkage loose from the carb and take it back out for a test spin. It STILL won't shift out of first. I fiddle with the linkage to make sure that it wasn't pulled out (engaging the kick down, and take it back out for a spin. It STILL won't shift out of first. WTF?!?

Help!