Speedo cable question

[southside_jon]

After my trans swap my speedo on my '87 didn't work. when I went to the parts store they asked me if I needed the upper or lower one. I wasn't sure so I went home and pulled mine out so we could compair and get the right one. Problem was, I only have one speedo cable. and it crossed reffrenced with an '85 model year. Anyone know if there is suppossed to be another speedo set up that's not on my truck?

The other question I had was; On my trans (TH400) the speedo cable doesn't thread directly into the transmission. There is this other thing that threads into the speedo hole, that come off the trans and then turns a 90 degree angle and my speedo cable then threads into that. What is that? lol.

And my speedo cable will not work cause there is this little plastic thing that slips over the end of the cable to spin what ever that 90 degree thing is. My plastic thing is broke and none of the parts stores knows what is. Does anyone have any idea where I can find another one?

Sorry Idont have any pics. I know they would help explain what I'm talking about. But any help would be better than none.

Thanks, Jon.