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Thanks for reply. I know that there is 40-50 HP less w/the 3.8, but I am also only running 33 vs 37. I bet the 4.56 would work fine. Thanks for the reply. However, there is not much difference in the 4.88 if I were to go that direction, I just don't want the engine to be wound that tight...

What do you have in yours? Do you happen to have the 3.8? According to the chart, I would be running about 2400 RPM at 70mph. I don't think that would be widing it out all that much, do you?

I am hoping that it is a game changer for OD>

Thank you for reply. I will probably lean toward the 4.56 since I may pull my riding more from time to time. THX again.

I did recalibrate and it did help, but still hunting for OD. I currently have 373 gears. I will be pulling small trailer w/riding mower, but very occasionally

No plans of lifting beyond the 33's. I do sometimes pull my riding mower on a 6x11 trailer. It is not really all that heavy, but maybe a slight drag.

I did do the speed-o calibration and that may have helped a wee bit, but still pretty significant loss of power when traveling at highway speeds 60-65 and trying to stay in OD>

I currently have a 2 inch puck lift and plan on staying with 33in tires.

I currently have 373

Looking for some info to make sure I choose the right gear ratio. Getting ready to re-gear. Currently: 2010 Jeep Wrangler JK Unlimited 66k miles , 3.8 Automatic , 2 in puck lift, with 33's / 373 gears Trying to decide between 456 and 488 gears. Use: General all around use - Sunday drives...

If I re- gear, will this keep the transmission from spinning so much faster and wearing

I went with the 3.8 because I was able to grab it for 12k and it only had 66k miles. Would have paid double that on the 3.6 and I was just using it for a weekend driver

Well, I may have went slightly big on the tires. Looks like I could have really used 410 gears in the 1st place. In this case, it looks like the 456 might be a better choice. Probably running about 2500 rpm at 75 mph. Might be a little on the high side, but I think that is better than all...

Once I completed the J scan, I could tell that is seems to dial in the speed much more accurately, but I have not actually checked with a gps . My son has a GPS watch and I can do that.

OK, my jeep is starting to come along and I am starting to get " Jeep Fever " Big thanks to everyone who has given me advice. I feel like I am down to the last couple of things. I have finished programming with the recommended Jscan program and I have reset my speedometer to reflect the...

That is what I am beginning to think. The resetting of the odometer w/the J-scan did seem to help a wee bit. However, it still having trouble staying in OD. I guess as long as I am not going to prematurely wear out the transmission, I could deal with it. For all around use, would you...

Thanks Dirty Dog, we will be using this Jeep for standard adventure to include gravel roads, fishing, camping, and sunday drives. If the OBDII dongles will reset my speedometer and adjust my shift pattern, I think that is all that I need. I am going to take the advise and buy the JScan and see...

Thanks for the advice everyone. I will try that ASAP!!

2010 JK Unlimited 4x4 Sport . w/3.8 - 373 gears and Automatic Transmission. Finally got the tires and wheels installed as well as the 2 in puck lift and jeep looks GREAT !!! The Jeep came standard with the 225/75 R16 tires and I replaced then withe 285/70 R17 - Basically going from a 29in...

I have factory wheels that I was going to use and when I purchased all of the factory painted flares and bumpers I needed on Marketplace, a set of hub centric spacers came with them but they are 1.5 inch vs 2 inch that I thought. I also have a set of Aftermarket 17 inch wheels I purchased on...