Speedometer Ratio Adjustment

[Trigger]

I have 35"tires and need to correct the speedometer on my 1979 CJ5 . It looks like the easiest way to correct this is to purchase a ratio adapter. The website below has them for GM/Dodge/Ford....will these work? The connections look the same, but I don't see anywhere noting they will work on jeeps.

Thanks!

Speedometer Gear, Speedometer Gears, Ford, GM, Dodge 700R4

 

[csuengr]

Use the GM parts.

 

[CJ]

Or - buy the correct gear, you can purchase a new gear for your Transfer Case to compensate for you tire size. It has been discussed here many times. A search will help and I'll look also.

 

[Trigger]

Everything I've found suggests you cannot get a replacment gear for a Dana 20 Transfer Case ? I'll keep looking though....

 

[BusaDave9]

Everything I've found suggests you cannot get a replacment gear for a Dana 20 Transfer Case ?

True. They have been harder to get each year. Now they are almost impossible. I gave up.
Next best try a speedometer gearbox like this:

Check this out: http://www.jeep-cj.com/forums/f2/dana20-speedometer-gears-6437/

 

[BusaDave9]

It looks like the easiest way to correct this is to purchase a ratio adapter. The website below has them for GM/Dodge/Ford....will these work?

Speedometer Gear, Speedometer Gears, Ford, GM, Dodge 700R4

Yes, that will work.

 

[yamadood]

I have been using my tom tom gps as a speedometer works for me. and tells me where to go. haha.