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Jeep Wrangler JK
JK Build Threads & Member's Rides
Scepter Toad
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<blockquote data-quote="ScepterToad" data-source="post: 458732" data-attributes="member: 25142"><p>On gears, I was thinking 4.10s, but the more I look at it, I'm just not sure. I found a chart on here that basically says for regular offroad at varying elevations, I should be at 5.13 or 5.38.</p><p></p><p>[URL unfurl="true"]https://wranglerjkforum.net/attachments/38gears-1200x1709-png-png.124517/[/URL]</p><p></p><p>However, I don't really like turning ~2400 RPM at 70mph. So, I might go lower (higher) to keep the RPM down. I'm not sure how this chart corelates to the 3.6 as it's for the 3.8, but it has to be close. When I look at the spicer gear ratio calculator (3.73s) and plug in the 5th gear ratio (0.8314) for the transmission at 2,000rpm, I should be able to make ~67mph. That would be acceptable I think. If I were to move up to 37" tires, I could make just over 71mph. </p><p></p><p>[URL unfurl="true"]https://spicerparts.com/calculators/transmission-ratio-rpm-calculator[/URL]</p><p></p><p>Any thoughts on all that?</p></blockquote><p></p>
[QUOTE="ScepterToad, post: 458732, member: 25142"] On gears, I was thinking 4.10s, but the more I look at it, I'm just not sure. I found a chart on here that basically says for regular offroad at varying elevations, I should be at 5.13 or 5.38. [URL unfurl="true"]https://wranglerjkforum.net/attachments/38gears-1200x1709-png-png.124517/[/URL] However, I don't really like turning ~2400 RPM at 70mph. So, I might go lower (higher) to keep the RPM down. I'm not sure how this chart corelates to the 3.6 as it's for the 3.8, but it has to be close. When I look at the spicer gear ratio calculator (3.73s) and plug in the 5th gear ratio (0.8314) for the transmission at 2,000rpm, I should be able to make ~67mph. That would be acceptable I think. If I were to move up to 37" tires, I could make just over 71mph. [URL unfurl="true"]https://spicerparts.com/calculators/transmission-ratio-rpm-calculator[/URL] Any thoughts on all that? [/QUOTE]
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Jeep Wrangler JK
JK Build Threads & Member's Rides
Scepter Toad
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