Speedometer gear

[eb-nutt1]

Anyone know the correct gear for 3 speed/ 4.10/33" tire combo? Have the 19 tooth natural color factory with 3.50 gears.

Brian

 

[thegreatjustino]

Download a GPS speed app for your phone and go for a drive with it running. Compare the GPS tracked speed with your speedometer and calculate how far off it is.

Each additional tooth will be a 5-6% change so if you figure your speedo is 20% low you'll need about 4 fewer teeth on the gear.

If you need the speedometer to read slower, add teeth.

If you need it to read faster, decrease the amount of teeth.

 

[Viperwolf1]

Hopefully you have a 7 tooth drive gear. If not you should find one.

Sent from my SM-G781U1 using Tapatalk

 

[Broncobowsher]

I will comment the better way to fix the speedometer error is to change the axle gears to 4.11s. Side improvement is the added drivability and it will feel like you just added 100 HP to the engine.

 

[eb-nutt1]

I will comment the better way to fix the speedometer error is to change the axle gears to 4.11s. Side improvement is the added drivability and it will feel like you just added 100 HP to the engine.

Swapping to 4.11's, with 33x10.50 tires..

 

[thegreatjustino]

Swapping to 4.11's, with 33x10.50 tires..

Looking at the chart, 3.50 gears with stock size tires uses the same gear as 4.11 gears and 33" tires.

You likely won't have to change gears at all.

Download one of the free GPS speed apps and run it after you do the gear and tire swap and see how accurate it is compared to your speedometer.

 

[eb-nutt1]

Looking at the chart, 3.50 gears with stock size tires uses the same gear as 4.11 gears and 33" tires.

You likely won't have to change gears at all.

Download one of the free GPS speed apps and run it after you do the gear and tire swap and see how accurate it is compared to your speedometer.

This will be the plan...thanks