Whitaker717 Posted September 21, 2021 Share Posted September 21, 2021 I am running about 5 mph slow on my speedometer. My cable needs replaced I think because it ticks up to about 25 then flattens out. I am running 235 75 15 tires. Would that make me run slow like that? I believe I have the Dana 355. Do I need to change out the gear? Link to comment Share on other sites More sharing options...
eaglescout526 Posted September 21, 2021 Share Posted September 21, 2021 Like the speedo gear itself in the trans? That gear is supposed to be changed out when you go up in tire size. Link to comment Share on other sites More sharing options...
Whitaker717 Posted September 21, 2021 Author Share Posted September 21, 2021 Yea that’s what I was wondering. The bigger tires were in there when I bought it. What size gear should I get. I’m going to change the speedometer cable out too while I’m at it unless changing the gear will stop the ticking or jumping. Link to comment Share on other sites More sharing options...
eaglescout526 Posted September 21, 2021 Share Posted September 21, 2021 There was something in the FSM regarding this actually. I would have to find it unless someone beats me to it. Link to comment Share on other sites More sharing options...
fiatslug87 Posted September 21, 2021 Share Posted September 21, 2021 Link to comment Share on other sites More sharing options...
Whitaker717 Posted September 21, 2021 Author Share Posted September 21, 2021 Somewhat of another silly question but do they make gear sizes according to this chart? Like 34 teeth, 33 teeth or do you just get a size close to what you need. Thanks for the chart that’s awesome Link to comment Share on other sites More sharing options...
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