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View Poll Results: What gear ratio do your run with your 35" tires
4.10 76 44.19%
4.56 59 34.30%
Stock gears 23 13.37%
Other 14 8.14%
Voters: 172. You may not vote on this poll

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  #1  
Old 05-01-2010, 06:53 PM
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srobertsfsj srobertsfsj is offline
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What gears with with 35" tires?

Using this calculator http://www.grimmjeeper.com/gears.html I come up with 4.10 being the closest match to stock RPM at 65mph and 35's. I am on the fence with upgrading to 4.10 or 4.56 to get a little more power. I was wondering what you guys are running with your 35" tires and why?
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  #2  
Old 05-01-2010, 06:54 PM
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The Colonel The Colonel is offline
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What is you intended use for your vehicle? Highway? Off road only?
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  #3  
Old 05-01-2010, 06:55 PM
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srobertsfsj srobertsfsj is offline
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50/50 offroad/highway. Nothing extreme offroad tho, maybe 5 to 8 rated trails.

This is a Waggy with 727/NP228
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'86 Grand Wagoneer Super Chief 360 / TBI / WT conversion / 35x12.5x16 BFG Mud-Terrains (Project Link)
http://www.cfsja.org / http://www.fsjnetwork.com

"After years of being paranoid about my Jeep’s temp going towards that 220F mark, I’m realizing that if it was real problem, Jeep engineers would have painted that area RED." - FSJ Guy





Last edited by srobertsfsj : 05-01-2010 at 07:01 PM.
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  #4  
Old 05-01-2010, 07:39 PM
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mattmopar440 mattmopar440 is offline
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4:10 are your best bet

with a 3 speed It's going to be a singing @ highway speeds tho 3:73 might be a better thought
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  #5  
Old 05-01-2010, 07:44 PM
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Heavy_Metal_Thunder_81 Heavy_Metal_Thunder_81 is offline
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3.73 would not be ideal for 35s since your stock gear ratio is probly 3.31 or 3.07 id go with the 4.56s
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  #6  
Old 05-01-2010, 07:44 PM
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srobertsfsj srobertsfsj is offline
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Correct my stock gears are 3.31's.
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'86 Grand Wagoneer Super Chief 360 / TBI / WT conversion / 35x12.5x16 BFG Mud-Terrains (Project Link)
http://www.cfsja.org / http://www.fsjnetwork.com

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  #7  
Old 05-05-2010, 11:42 AM
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madmikeX3 madmikeX3 is offline
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I'm running my stock 3.31 gears with 35's on my 80 chero 4 speed. Does real well on gas. Cruises along not screaming at 55-70 MPH and I can still spin the tires.
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Old 05-06-2010, 09:00 PM
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i went with 4.56 in my truck with 35" tires.

My buddy Kevin went with 4.10 and wishes he had 4.56

it winds a little high at 85 mph but when wheel'n it is good to have the gears.
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  #9  
Old 05-08-2010, 12:09 AM
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I went with 4:30's (split the diff between the 4:10 and 4:56). When I get it running good I will post, but around the neighborhood it runs much better than the old 2:89's did!
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  #10  
Old 05-08-2010, 05:30 AM
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I was going to say what j10jim said, just split the difference (4.27 or 4.30 depending on who you go through for gears). You will still have teh gearing for off road and your onroad RPMs will not suffer that bad.
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  #11  
Old 05-08-2010, 10:47 AM
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srobertsfsj srobertsfsj is offline
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Quote:
Originally Posted by j10jim
I went with 4:30's (split the diff between the 4:10 and 4:56). When I get it running good I will post, but around the neighborhood it runs much better than the old 2:89's did!

Hmm, interesting, didn't even know I could get 4:30 gears. Looks like they are a bit more and would probably be harder to find used. But no I have an even tougher decision, lol.
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'86 Grand Wagoneer Super Chief 360 / TBI / WT conversion / 35x12.5x16 BFG Mud-Terrains (Project Link)
http://www.cfsja.org / http://www.fsjnetwork.com

"After years of being paranoid about my Jeep’s temp going towards that 220F mark, I’m realizing that if it was real problem, Jeep engineers would have painted that area RED." - FSJ Guy




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  #12  
Old 05-08-2010, 09:42 PM
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Quote:
Originally Posted by srobertsfsj
Hmm, interesting, didn't even know I could get 4:30 gears. Looks like they are a bit more and would probably be harder to find used. But no I have an even tougher decision, lol.

I don't think you can get them for the AMC20. For the Dana 44, you can get 4.27's which are close enough.
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  #13  
Old 12-03-2013, 05:58 PM
rocklaurence rocklaurence is offline
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Quote:
Originally Posted by madmikeX3
I'm running my stock 3.31 gears with 35's on my 80 chero 4 speed. Does real well on gas. Cruises along not screaming at 55-70 MPH and I can still spin the tires.
My Cherokee project is running 33x10s with 3.31 gears and AX15 five speed. It should be at approx 2K rpm in OD at 65 mph
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  #14  
Old 12-01-2015, 08:13 PM
firedog firedog is offline
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I put 4.56 in mine. We go to Moab every year. Wheeled like a monster on all the hardest trails Moab has to offer, and drives around town getting groceries like a champ. Been very happy with 4.56 for gearing selection with my 35".

Best of luck
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