Speedometer Thingy Question

[Chaparralman1974]

Morning everyone!

So, when I got my truck, the speedometer cable screwed directly into the transfercase. I was able to locate another transfercase and that is the one that I ended up rebuilding due to the fact that it was in much better shape than the original one that came with the truck. The one that I rebuilt originally came out of a 1967 K10 (Mine is a 1967 K20). The K10 one had this wierd 90 degree gear thingy that the speedometer cable screwed into. As near as I can tell, it is not a gear reduction or anything. Is it needed, or was it something that was exclusive to 1/2 ton trucks? Did mine originally come with one and was it just missing on my truck?

Also, can anyone confirm the correct speedometer cable routing along the frame? I cleaned up my cable and relubed the internal cable itself and just set it into the frame in the pictures below.

Any help would be appreciated!

Thanks, Clay

[kwmech]

It is for speedometer calibration--there should be numbers on it somewhere indicating the percentage

[Chaparralman1974]

Originally Posted by kwmech

It is for speedometer calibration--there should be numbers on it somewhere indicating the percentage

Ok, thank you much. I will take a look and see what numbers are stamped on it.


Clay

[jeffahart]

You won't know anything about what's going on with that ratio adapter or the cables until you run the truck. If the cables are old they could cause the speedo needle to bounce. I tried lubing my old cable with no luck, I had to get a new one. Anyhow when you get to the point, and if you need a new adapter... PATC

https://transmissioncenter.net/shop/...ratio-adapter/


j

[Chaparralman1974]

Thanks Jeff!

That makes sense. Ok, I will ignore it for now and move onto the next phase of the project. I am now beginning on the cab!


Clay

Originally Posted by jeffahart

You won't know anything about what's going on with that ratio adapter or the cables until you run the truck. If the cables are old they could cause the speedo needle to bounce. I tried lubing my old cable with no luck, I had to get a new one. Anyhow when you get to the point, and if you need a new adapter... PATC

https://transmissioncenter.net/shop/...ratio-adapter/


j