Speedometer cable

[junior636]

Trying to get what I need to hook up an auto meter speedometer to my 727 in my 69 Dart. I figured out what gear I need at the transmission. I have no parts right now other than the speedometer. I plan to order the gear, cable and is there an adapter for the auto meter gauge? Are there different length cables or what do I need for a cable? All help is appreciated.

 

[Dana67Dart]

The cable length most likely would be stock length for the year and application.

As fof ends, what type of end does the auto meter need Chrysler press on or screw on.

The trans has a carrier that the speedo gear mounts into. Do you have that?

Another route is there are speedometer repair companies which can make you a custom cable to fit. There are probably online companies where you send your specs and the ship you a custom one.

Post a photo of the back of the speedometer. Or a link to the speedometer you bought.

 

[junior636]

Here’s what I have

 

[junior636]

What’s the thread at the transmission?

 

[Dana67Dart]

My money is you want a 67 Dart cable as it has a threaded end on both ends, one larger for the trans and one smaller for the speedo.

This is the one on my 67 Dart right now. 61" long (WHAT I don't know, is the 727 speedo gear the same distance from the rear of the block as the 904?

This cable is attached to my 904

it is a spot on repo of the 67 cable



speed end

5/8" - 18


trans end

7/8" - 18

 

[junior636]

My money is you want a 67 Dart cable as it has a threaded end on both ends, one larger for the trans and one smaller for the speedo.

This is the one on my 67 Dart right now. 61" long (WHAT I don't know, is the 727 speedo gear the same distance from the rear of the block as the 904?

This cable is attached to my 904
View attachment 1716497420


it is a spot on repo of the 67 cable



speed end

5/8" - 18


trans end

7/8" - 18

Yup, that’s what I need! Thank you Sir!

 

[Dana67Dart]

Here is a simplification on indexing the gear carrier.

All of the blue (gear carriers) centers are the same distance from the upper edge of the gray rod (the output shaft of the transmission)

The green gear is smallest in OD
The Yellow gear is middle in OD
The red gear is largest in OD

Note the gray center line of each gear rises as the gear gets larger

If you look at them from the back...
you can see how the index marks move and the center line of the gear rises for a larger gear

1 bar is the small gear
2 bars is the middle gear
3 bars is the largest gear

So if you had the smallest gear clocked for the largest gear the small gear would not touch the output shaft