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Regearing question

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Old 09-03-2018 | 06:32 AM
  #1  
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From: Tempe,AZ
Default Regearing question

I have a 2016 wrangler jk sport with 6 speed manual and 3:21 gears. I have a rubicon express 2.5” superflex lift kit with RB monotube shocks and nitto ridge grappler 33” tires wich actually measure 32” on 17” wheels. It is basically my weekend daily driver and I do not plan on doing any extreme rock crawling but do want good off road performance along with good highway performance. My question is 4:10 or 4:56 gears.
Old 09-03-2018 | 09:20 AM
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I had 4.10’s put in my 07 Sport. I run 33” and it does well for hitting the back mountain passes and such. I went with 4.10’s thinking that would be plenty plus the guy who did my axle work had plenty of used 4.10’s making it a more cost effective solution for me. The way the Jeep rides up highways through the mountains I am still downshifting quite often. I wish I had chosen 4.56 gears for my setup now. My 2 cents.
Old 09-03-2018 | 10:57 AM
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Gearing is a preference. That being said, 32/33's with 4.10s and a manual will be similar to a stock Rubicon. I'm my opinion 4.10s would be the way to go. With my stock Rubi set-up I could start in 4th on flat ground. Elevation makes a difference, how much weight you have, and how big of tire you plan to eventually run should all be considered. I'm running 4.10s with 35s and it isn't bad, I wouldn't mind going to 4.56, but it isn't in the budget right now. If you are going to stay on 33s then go 4.10, if you will change to 35s then wait till right before you get the tires, and then go 4.56.
Old 09-03-2018 | 04:32 PM
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I think you're on the right path with the 4.10s if you plan on sticking with a 33" tire. IMO, ~2400 @ 70mph on the gear charts is about the sweet spot for the 3.6L for most applications. That puts you about 2500 rpm on the interstate @ 75mph. Granted, there will always be exceptions, like living in hilly mountains and such, or folks that never get on the interstate and are more concerned with only low end. It also doesn't sound like your off roading is really slow, technical crawlin' where you need a very slow crawl where you might want something even lower for those benefits. 4.10s sound like they'd suit you well.
Old 09-04-2018 | 04:21 AM
  #5  
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Default Thanks for your input

Originally Posted by Seizer
I had 4.10’s put in my 07 Sport. I run 33” and it does well for hitting the back mountain passes and such. I went with 4.10’s thinking that would be plenty plus the guy who did my axle work had plenty of used 4.10’s making it a more cost effective solution for me. The way the Jeep rides up highways through the mountains I am still downshifting quite often. I wish I had chosen 4.56 gears for my setup now. My 2 cents.
Thanks for your input
Old 09-04-2018 | 04:24 AM
  #6  
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Originally Posted by tjkamp
Gearing is a preference. That being said, 32/33's with 4.10s and a manual will be similar to a stock Rubicon. I'm my opinion 4.10s would be the way to go. With my stock Rubi set-up I could start in 4th on flat ground. Elevation makes a difference, how much weight you have, and how big of tire you plan to eventually run should all be considered. I'm running 4.10s with 35s and it isn't bad, I wouldn't mind going to 4.56, but it isn't in the budget right now. If you are going to stay on 33s then go 4.10, if you will change to 35s then wait till right before you get the tires, and then go 4.56.
thanks for your input
Old 09-04-2018 | 09:26 AM
  #7  
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From: Sweet Home, TX
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Have you taken a look at the gear charts on google images? It is different between the 3.8 and the 3.6. Also, the 3.6 has more power, so it will feel different than a 3.8.



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