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Topic Summary

Posted by: athawk11
« on: February 23, 2015, 10:49:49 PM »

Those are pretty neat gadgets.  Do you know if any actually fit a Dana 18?

Posted by: Mark W.
« on: February 23, 2015, 09:36:05 PM »

there are mechanical gear boxes that can change your speedo

Here is a discussion of one

http://www.yotatech.com/f116/mechanical-speedo-correction-box-install-pics-195986/

here are a bunch on eBay

http://www.ebay.com/bhp/speedometer-adapter

here is someone selling them and explaining how to figure out what you need

http://www.bobsspeedometer.com/1/120/ratio_adapter.asp

That should give you a starting point.
Posted by: athawk11
« on: February 23, 2015, 06:21:01 PM »

Is your transfer case the Dana Spicer 18?  If so, I don't think you have an option for a different gear.

Is the needle steady at speed on the new speedometer, or is it bouncing around?

Tim
Posted by: Jakes Retreds
« on: February 23, 2015, 05:42:16 PM »

I have a 1952 CJ3A and wanted lit gauges.  Ordered some off of EBay and lo and behold they came from India.  Nice looking, but that's about all.  My Speedometer is reading about 1/2 of actual.  Is it possible to change the gearing in the transfer case to make up for this?