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Jeep Wrangler JK
JK General Discussion
3.73 gears ration with, 35s, 3.8 and automatic transmission: Anyone have this build?
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<blockquote data-quote="MacGuyver" data-source="post: 457972" data-attributes="member: 18877"><p>The big restriction he is dealing with is the gearing of the auto transmission and the power of the 3.8 engine. I have the same engine, but I have a rubicon with 4.10 and a manual. The gearing curve for the 4 speed auto they paired with the 3.8 is totally set for fuel efficiency. You pretty much have to re-gear just to go bigger than stock tire size, which some of the early JKs came with 29 inch tires.. and he may have a 3.21.</p></blockquote><p></p>
[QUOTE="MacGuyver, post: 457972, member: 18877"] The big restriction he is dealing with is the gearing of the auto transmission and the power of the 3.8 engine. I have the same engine, but I have a rubicon with 4.10 and a manual. The gearing curve for the 4 speed auto they paired with the 3.8 is totally set for fuel efficiency. You pretty much have to re-gear just to go bigger than stock tire size, which some of the early JKs came with 29 inch tires.. and he may have a 3.21. [/QUOTE]
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Jeep Wrangler JK
JK General Discussion
3.73 gears ration with, 35s, 3.8 and automatic transmission: Anyone have this build?
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