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Old 07-12-2010, 02:41 PM   #1
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3 Speed or 4?

I need to hear from experience on deciding if the 4 speed auto is much of a benefit compared to the 3. 2003 i believe is then they changed. I just started shopping so looking to get the most benefit for DD and occasional off-road. Auto, 4.0, AC are my only musts. Would be nice to find a Rubicon too! But I'm sure that means more $$

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Old 07-12-2010, 02:46 PM   #2
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4 spd definetly

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Old 07-12-2010, 02:47 PM   #3
Knows a couple things...

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The 4-speed provides an overdrive ratio which is nice for the highway, the 3-speed does not. The 3-speed is superb, reliable, and better for offroading but for your DD and occasional offroad use, go for the 4-speed which became available in 2003..

Just be aware that if you get the 4-speed and should ever decide to regear your axles for bigger tires, that you need a lower axle ratio when you have the 4-speed automatic due to its very steep overdrive ratio. That just means if a 4.56 ratio was proper for a typical Jeep, you'd want a 4.88 for the 4-speed automatic so the engine rpms aren't too low for the highway.
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Old 07-12-2010, 02:56 PM   #4
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^^^Or if I find a Rubicon, I'm covered for 33's right? Which is the tire size i want.
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Old 07-12-2010, 02:59 PM   #5
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Originally Posted by legman68 View Post
^^^Or if I find a Rubicon, I'm covered for 33's right? Which is the tire size i want.
Well, 33" tires will work ok, but you'll find your rpms will be pretty low with 33" tires once the tranny kicks into overdrive. You'll find yourself wishing it hadn't shifted into overdrive much of the time with bigger tires like that. 4.88 would be the optimal axle ratio for 33" tires and the 4-speed automatic.
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Old 07-12-2010, 03:24 PM   #6
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So, if I have to re-gear anyway, and only moderate wheelin', maybe skip the Rubi? Spend elsewhere?
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Old 07-12-2010, 05:30 PM   #7
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Heck no! Get the Rubi and gear it! The benefits WAY outweigh the detriments.

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