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Speedometer Calibration


Leroy_TJ

2006 Jeep TJ Wrangler X
Supporting Member
Joined
Jul 21, 2019
Messages
292
Location
Leroy,Alabama
Quick question, What speedo gear do I need to correct my speedometer ? I am getting my jeep 2006 4.0 6 Speed NP231 re-geared in a couple weeks to 4:56, I have 33" tires.
I will also be replacing clutch right after. I know this has been discussed before, but i am at work and don't have time to search it. All help is greatly appreciated.
 
OP
Leroy_TJ

Leroy_TJ

2006 Jeep TJ Wrangler X
Supporting Member
Joined
Jul 21, 2019
Messages
292
Location
Leroy,Alabama
I ordered a crown 39T from Jegs for 28.00 with an oring. If it gets the speedometer close I will be happy, I am 10 mph off right now with 33’s and 3:07s. Jeep is a slug right now hope to change that in a couple weeks