How difficult is it to change gear ratio in Jeep wrangler?

I recently did an engine conversion on my Jeep Wrangler YJ from the 2.5L I4 to a small block chevy 305 using a TH350 3 speed automatic tranny. The gear ratio is currently at 4.10:1 gears and at 55 mph i'm taching about 4000 RPM. What would be a good gear ratio to change to, and how difficult would it be to do.



I do realize that I'll have to change the front and rear at the same time.



Would it just be easier to get the axles out of an old wrangler YJ I6 with a 3.54:1 gear ratio?How difficult is it to change gear ratio in Jeep wrangler?
A couple of things to condsider would be your choice in tire size. Your taching out now, do you have stock tires and are you going larger? If you have stock and put 35'; tires on, you'll probably be fine. What kind of activities do you have planned, street driving or a little offroading?



Definitely worth it to have someone install ring and pinion for you, plus you can get some quality gears (Yukon).



That all said...you will still need at least one new axle and NOT from another YJ. You will, more than likely, have a Dana 35 rear axle (also known as a ';turdy 5';) that will break the first time you give it some real gas (if you ever take it on a trail).



If you plan on keeping to the street you will probably be okay for a while. Off road, you'll have a time bomb in your rear end...carry spare axle shafts (good news most people throw these out).



Best places for gears (I've re-geared three jeeps and couldn't beat these prices): www.completeoffroad.com (I don't work for them or know them, just an extremely happy customer)



Also check into the forums: www.wranglerforum.com and www.jeepforum.com



Have fun!How difficult is it to change gear ratio in Jeep wrangler?
Changing gears is a specialist and time consuming job.To buy the tools you'd need to do it properly would be a huge chunk of what it would cost to get them done. Swapping axles would be much easier.