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Jeep Wrangler JK
JK General Discussion
High RPMs after gear swap: Is this normal?
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<blockquote data-quote="SteveF" data-source="post: 446238" data-attributes="member: 20817"><p>I had 3.21 gears with 35's , I changed to 4.56 gears. Rpm's definitely increased. I have the 5spd automatic. Jscan with an OBDII scanner is your best friend. The computer needs to k ow your exact tire size. My 35's are actually 34 inches from top to bottom. You have to measure your tires and enter that measurement into your Jscan.</p></blockquote><p></p>
[QUOTE="SteveF, post: 446238, member: 20817"] I had 3.21 gears with 35's , I changed to 4.56 gears. Rpm's definitely increased. I have the 5spd automatic. Jscan with an OBDII scanner is your best friend. The computer needs to k ow your exact tire size. My 35's are actually 34 inches from top to bottom. You have to measure your tires and enter that measurement into your Jscan. [/QUOTE]
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Jeep Wrangler JK
JK General Discussion
High RPMs after gear swap: Is this normal?
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