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Old 11-01-2013, 11:41 AM   #1
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Gearing Help Please

So my lady has a 1997 Wrangler with the 4.0 6 cylinder,5 speed...it has 3.07 gears and 33's..it wont go over 60mph no matter how much you push the gas pedal down...any suggestions?

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Old 11-01-2013, 11:42 AM   #2
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You'd probably be best with a 4.56 gear ratio

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Old 11-01-2013, 04:51 PM   #3
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stay out of 5th gear if you want it above 60. I had 3.07's and 33 for a few years and 5th was only used going down hill.

If you want to change gears, and don't plan on going over the height of 33" tires, then 4.10 ratio will do you ok and still have good gas mileage. If you want power and don't care about gas mileage then switch to 4.56's.

I currently run 33's in the winter with 4.56 gears, and I have tons of power, I can start out in 2nd gear in most places, but gas mileage is a joke. in the summer I run 35" tires and my mileage is a little better.
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Old 11-01-2013, 08:05 PM   #4
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Someone suggested she has a plugged up cat...could that be it? i have the exact same combo but with 31's and i pull through to 80...hers its like it stops making power at 60,even though the gas pedal can still go way down.
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Old 11-01-2013, 08:18 PM   #5
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Quote:
Originally Posted by EChaney View Post
Someone suggested she has a plugged up cat...could that be it? i have the exact same combo but with 31's and i pull through to 80...hers its like it stops making power at 60,even though the gas pedal can still go way down.
3.07 is too low a gearing(numerically) for 33s, as suggested keep it out of 5th unless on a flat road or downhill. Otherwise optimal gearing for the 4.0 with the 5speed manual is 4.56. Will do best on the highway and off-road
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Old 11-01-2013, 08:50 PM   #6
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ok...next question...where is the best place to get say 4.10 gears...and will anything from the Ford explorer/ranger/bronco II or grand cherokee interchange(gears)?

If i read things right,these(1997 Wrangler Sport's) have a Dana 30 up front and a Dana 35 in the rear?

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