35c gear ratio - JeepForum.com
 
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post #1 of 7 Old 03-31-2002, 07:09 PM Thread Starter
mde
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35c gear ratio

I've got alot of mixed responses over this but maybe you guys can help. I'm putting 35's on my 89' YJ this week and wanting to change the gear ratio. I need to know what ratio comes standard in this diff. and what ratio I should upgrade to.
From what I've heard 4.10 comes with this model and I should upgrade to 4.56. Is upgrading that necessary with 4.10 or should I go higher?
I'd appreciate any advice.
Cheers


89' YJ
AMC 258, all mods
7" SOA BF 35" mud terrain
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post #2 of 7 Old 03-31-2002, 08:39 PM
Patton
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I assume it is a 4 cyl. with 4.10's? I would do 4.88's but only if you can find them in a good brand and immediately after you get them take them to a rearend professional to look them over to make sure they aren't second quality. The market is full of cull's and often don't last long or make a lot of noise. Motive gears or Dana/Spicer gears are the only two brands of gears I use, but last I checked neither company made 4.88's for your 35/30 combo.

94 YJ 4.0/3spd dana 60/44 w/35's 9" of suspension lift
Sold-06 TJ X 4spd auto 3.73
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post #3 of 7 Old 03-31-2002, 08:58 PM Thread Starter
mde
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This seems like a good idea. My YJ is a daily driver, however small the drive may be. To answer your previous question, the engine is a 6 cyl. and not a 4.
Cheers

89' YJ
AMC 258, all mods
7" SOA BF 35" mud terrain
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post #4 of 7 Old 04-01-2002, 01:49 AM
evilpsych
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then 4.56 at the minimum..

A
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So he wants to go OFF-ROAD does he????

'93 YJ, 4.0, K&N filter, Borla Header, Borla Cat-Back, Hi-Flo Cat, 3 Core Radiator, D-Rings, TruckNuts, MSD 6A, LockRite Locker in D30, Magnecors, Kickass Stereo, 1" daystar, 31" BFG AT's, Homemade Rocker Guards and Front/Rear air-tank bumpers with tire carrier, 15x8 AR-767 4"BS, BDS 3.5 HD lift, AMA A/C Kit, York OBA, GoFerIt 1" MML, 8,000lb HF/MM Winch, Magellan MAP 330 GPS, PRO-2067 500ch. Scanner, oh, and a CB capable of talking to SATURN!

"The Only Thing Necessary for Evil to Succeed is for Good Men to Do Nothing." - Edmund Burke
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post #5 of 7 Old 04-01-2002, 05:58 AM
Patton
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My old Yj was a 4.0L with 4.10's (Not factory option) and it was the perfect gear set up to match my 35's. Get the tires and then see if you need to regear to 4.56. A 6cyl with 4.88's and 35's is too low. If it is a 3spd auto then 4.56's will most likely be too low.

94 YJ 4.0/3spd dana 60/44 w/35's 9" of suspension lift
Sold-06 TJ X 4spd auto 3.73
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post #6 of 7 Old 04-02-2002, 07:42 PM
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</font><blockquote><font size="1" face="Verdana, Arial">quote:</font><hr /><font size="2" face="Verdana, Arial">Originally posted by Patton:
<strong>My old Yj was a 4.0L with 4.10's (Not factory option) and it was the perfect gear set up to match my 35's. Get the tires and then see if you need to regear to 4.56. A 6cyl with 4.88's and 35's is too low. If it is a 3spd auto then 4.56's will most likely be too low.</strong></font><hr /></blockquote><font size="2" face="Verdana, Arial">I'm running 35s with 5.13s. Not a chance is it too low. Not a chance. I ran 4.10s with 33s and didn't think it was low enough. Just a differing opinion is all.

Matt Osburn

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post #7 of 7 Old 04-03-2002, 04:53 AM
Patton
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It wasn't a hardcore trail machine but moreless my only transportation. Not complaining, it had to have been at the time the best Jeep owned by anyone my age in town. The 4.10's and 35's made for a comfortable ride. One way to look at it is 20% increase in tire diameter and 20% increase in gear reduction. 3000 RPM's at 65 mph.

94 YJ 4.0/3spd dana 60/44 w/35's 9" of suspension lift
Sold-06 TJ X 4spd auto 3.73
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