Speedometer off

Alaskan_TA said

There is a chart you can use online at Mopar Speedometer Pinion Numbers - the last two numbers are the number of gear teeth on the transmission pinion gear.

You need to know your rear tire diameter & rear axle ratio.

The pinion gears have the number of teeth embossed on them in a circle.

Click to expand...

That looks like the chart I used last time. I had to guess a bit, cause my tires are like 25.5”, and 3:23 gears not 3:21 like the chart says.
Looking at that I probably went with the 33 tooth. Looks like the next one up is a 35. But I’ll pull it and check before I buy one