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5:13's and 33's?

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Old 07-11-2011, 07:31 PM
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Default 5:13's and 33's?

I will have to run thi setup for about 600 kms. Just wondering if it will be ok at highways speeds?
Old 07-11-2011, 07:37 PM
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Default 5:13

I think you'll like it . I run 5:38's with 35's and I only turn 2500 RPM's at 65 MPH. Jeep seams to love it. No more shifting out of OD every time the wind blows. Still getting 14 to 15 MPH freeway. Speedo is only off 4 miles an hour at 65.

Last edited by rock killer; 07-11-2011 at 07:43 PM.
Old 07-11-2011, 07:40 PM
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From my experience i would have to say no , you are going to be reving the hell out of your motor. If you drive at slower speeds you should be alright , dont forget to adjust your speedo.
Old 07-11-2011, 08:01 PM
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So what set up are you running
Old 07-11-2011, 08:11 PM
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Originally Posted by Birdog3
From my experience i would have to say no , you are going to be reving the hell out of your motor. If you drive at slower speeds you should be alright , dont forget to adjust your speedo.
These 3.8's like to turn higher rpms it seems.
Old 07-11-2011, 08:20 PM
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Yes the automatic needs the RPM's. Power to the rear wheels is very low until 3000 RPM's . If you live in an area with a lot of hills or mountains you'll like the 5:13's. I got the same info off this forum when I geared my jeep and it work's great . Just passing it along Hope it helps
Old 07-11-2011, 08:29 PM
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I'm running 5:13 with 35 (34 measured) and I think you'll be happy running that ratio with 33s as long as you don't drive 80 all the time. Like others have said here, the V6 likes to rev a little.
Old 07-11-2011, 08:36 PM
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Originally Posted by rock killer
So what set up are you running
IM running 37's with5:13s and a 6 speed and im turning almost 3000 rpm at 65mph so you have to be doing more than that!
Old 07-11-2011, 08:36 PM
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Originally Posted by bermsmasher
I'm running 5:13 with 35 (34 measured) and I think you'll be happy running that ratio with 33s as long as you don't drive 80 all the time. Like others have said here, the V6 likes to rev a little.
I'm only going to be running the 33's for a couple days till I get my 37's from a friend.

The plan is to head to Northridge and get my gears done then head back to Canada to install the new tires.

But it leads to a new question. What's the break in period for gears? I guess I'll have to call NR tomorrow.
Old 07-11-2011, 10:00 PM
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Default works for me

i'm running 33's with 5.13's and just went cross country. i have an auto and usually drive between 65-70 which gives me 2300-2500 rpm's. been running this for about 7k miles now and haven't had a problem.


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