Topic: Anyone have 4.88s, 35s and an auto tranny?

[Jeffy]

If you run the numbers through that link I posted earlier, you'll get the exact RPM's and MPH for whatever gear.

3000 RPM's isn't high, especially for a 2.5L.  It's actually in the sweet spot which should go up to 3700 RPM's.  With some mods, you can bump that to 5000 RPM's.  Although, no one drives with the needle at 5000.  With my Jeep, I'm usually reving it past 4000 when getting onto the freeways.  Then I like to have it around 27-3200 RPM unless I really want to cruise and then it's 5th and I'm not passing anyone unless I'm doing over 70MPH to where the RPM's start to climb abck into the power band.

[aerotech]

I've got a 98 Wrangler, 2.5L, automatic with 33" tires and it has absolutely no power. If it windy or up a slight incline can not make 55mph on the highway. I have stock gearing and would like to know what I should regear to for daily driving?? Any suggestion would be greatly appreciated

[dwtaylorpdx]

Look back in the thread a bit, Jeffy posted a link to a gear calculator.
You just put in the tranny gears and then chang the final ratio until
the rpm's are what you expect.

4.56 gets me by with my 5 spd but I'd go up to 4.88 or 5.38's if I were starting over.

Dave.

[TahoeYJ]

Another Welcome aboard, Paul  Nice to see folks from other sites finally checking in!

I don't have any info to help you though, I just wanted to say welcome 

[paultyler]

Another Welcome aboard, Paul  Nice to see folks from other sites finally checking in!

I don't have any info to help you though, I just wanted to say welcome 

Thanks! 

[4X4DAVE]

I run 4.88 and 33 with a 3 speed auto trans, it runs well. Around town its great but on the highway I do have higher rpms like close to 4 at 65-70 mph. I do drive mostly city driving but I don't hesitate to driving on the highway

[4X4DAVE]

  just saw that this is a old post