New Speedometer Cable Help

[DD1]

Hello,

I need help to purchase a new speedometer cable for a 71 C10 with a TH350 transmission, but I don't have the old one for comparison and I'm not sure which is the right one to get. Any suggestions (model numbers, links, etc) are appreciated.

Thanks!

[sick472]

GMCPauls only carries one size for our year of trucks, it's 70 inches long. LMC carries several lengths. The trick is how you are going to route it to determine length. A coat hanger (or two) comes to mind to help layout the path and estimate the needed length.

No tight bends and stay as far away from the exhaust as possible. I'm betting the one from GMCPauls will will be fine, but check your truck first to make sure.

https://gmcpauls.com/instrument_panel.htm

https://www.lmctruck.com/1967-72-che...dometer-cables

I can vouch for GMC Pauls parts and service...I have not dealt with LMC at all.

[DD1]

Originally Posted by sick472

GMCPauls only carries one size for our year of trucks, it's 70 inches long. LMC carries several lengths. The trick is how you are going to route it to determine length. A coat hanger (or two) comes to mind to help layout the path and estimate the needed length.

No tight bends and stay as far away from the exhaust as possible. I'm betting the one from GMCPauls will will be fine, but check your truck first to make sure.

https://gmcpauls.com/instrument_panel.htm

https://www.lmctruck.com/1967-72-che...dometer-cables

I can vouch for GMC Pauls parts and service...I have not dealt with LMC at all.

Thanks! I was more concerned with the end connector than the length, but will use your advice to measure with a coat hanger.

Appreciate the help.

[sick472]

Do your due diligence, but I think you will find that the ends do not change for our trucks.

[IronCanine]

Just as an FYI for folks. The 70 incher was a little tight on our 69 K10 that we just finished. Of course you've got the transfer case added on there, but also the original Stewart Warner adapter made things very tight. We got it together, but it was under some strain. So we had one custom made. Very quick, high quality and reasonable price...here's the link in case anyone needs it...they're in Denver:

https://speedometercablesusa.com

[DD1]

Originally Posted by IronCanine

Just as an FYI for folks. The 70 incher was a little tight on our 69 K10 that we just finished. Of course you've got the transfer case added on there, but also the original Borg Warner adapter made things very tight. We got it together, but it was under some strain. So we had one custom made. Very quick, high quality and reasonable price...here's the link in case anyone needs it...they're in Denver:

https://speedometercablesusa.com

Thanks! I think I will give them a call. I was wondering whether I need an adapter to compensate for tire size. I have no idea whether the tires are a stock size or not.

[DD1]

Originally Posted by sick472

Do your due diligence, but I think you will find that the ends do not change for our trucks.

Thanks. I know the ends don't change, but not having the original I wanted to be sure I get one with the correct ends. On the link from LMC they show two cables with different ends; I was able to figure out which of the two was likely correct from looking at the gauge cluster.

[54blackhornet]

I just sold an original out of a 71 K10. The length was 74/75 inches in length.

[NGN]

Sorry for jumping in on your thread, but being on this topic is so close to what I been wondering. I know there's different length speedometers cables and I now read all ends are the same, just need to ask, are the ends the same for automatic and manual for the cable to hook up ?, That is, I removed my manual 3 speed and replaced for a auto 350 trans and wondering if the cable ends are still the same on the tran side.
Thanks
NGN
Nick

[DD1]

Originally Posted by NGN

Sorry for jumping in on your thread, but being on this topic is so close to what I been wondering. I know there's different length speedometers cables and I now read all ends are the same, just need to ask, are the ends the same for automatic and manual for the cable to hook up ?, That is, I removed my manual 3 speed and replaced for a auto 350 trans and wondering if the cable ends are still the same on the tran side.
Thanks
NGN
Nick

I just saw your post. Based on everything I've read on this forum, plus the responses to my question on this thread, it seems the end connectors have not changed at all until the late 70's. I think you will be good, but if you have the cable you can quickly find out.