I'm having trouble deciding if I want the AEV 3.5 Lift with 35's or the 4.5 lift with 37's..

I need to know which additional mods need to be made to these lifts (drivelines, ratios, etc) ?

Thanks

 

what kind of jk do you have? X? Sahara? Rubicon? 37's are a lot of tire and unless you're willing to go the distance with them (or, not wheel your jeep too hard), i would recommend sticking with 35's. both lifts will require a new rear drive shaft in the rear if you have a 2-door and if you have an auto, you will need one up front as well.

 

Hey Wayoflife, I plan on getting 37's. Since we are on the subject I wanted to make sure that I have the right plan for a modest build.

1. On Rubi 07, Re-gear Dana 44's (4.10) to 5.13's
2. Change front and rear drive shafts with Cromoly.
3. C gussets for added support
4. CV Drive shafts for greater articulation on 4" lift

Am I missing anything.

 

just a complete lift kit and/or fender chop that will give you the clearance you need for 37's.

 

I am getting my 4.5 AEV lift installed the 1st week of January. I am putting Rock Krawler front lower adjustable control arms to avoid the cam locks everybody despises.

 

I have the Rubicon Unlimited Auto

At this point 35's seem like the way I'm gonna go..

What mods do I need for that?

 

You will need to at least remove the band clamp that holds the bellows seal on your front driveshaft at the top end. It will most likely hit on your transmission oil pan and tear the clamp off and possibly destroy the bellows. You'll need to find something to replace it that is very low clearance. (I'm using duct tape for now!). The best solution is to get an aftermarket front driveshaft though.
Your axle gear ratio should be fine with 35's but something a little higher would be better if you can afford it, depends on what type of driving you typically do. If you live in a mountainous area you should consider a gear swap to a higher ratio but if you live in the flat lands the stock gears are OK.
You might also consider getting a set of adjustable lower control arms so that you can set your caster properly. The cam bolts included in the kit don't give you enough caster adjustment and some have said that they can loosen, but I've not had any problems with mine.
Those are the only 3 things I can think of right now.
I'd definately get the premium system with the steering correction kit. Steering is better than stock.

 

what he said, at the very least, new adjustable lower front control arms and a new front u-joint style drive shaft should be things you should get.

 

a 6-speed doesn't have an automatic transmission sump pan or skid plate to get in the way and tear off your front driveshaft boot.

 

yeah, i do that all the time too. just happend to look at his profile ahead of time and that's why i knew.