[digsdirt]

Just ordered a 4" RC lift kit. Going to go with 33x12.5 tires. Do I need to regear my 88 YJ?

 

[mholloway1809]

You need atleast 4.88 with 33's to put the RPM's back in range for proper power and fuel MPG not to mention take the stress off the transmission and driveline.

 

[YJman]

Agreed^^ but you will survive for now without regearing.

 

[MikeMTJ]

4 cyl or 6 cyl?

 

[digsdirt]

6 cyl. How hard is it to regear? Worth having a shop do it?

 

[MikeMTJ]

Very hard, and very expensive. Shops charge a lot on labor, because it takes a good amount of skill to do it. We are talking over a grand here.

If you are really pressed on cash...there is another option. While many will disagree, you could always grab a d30 and d35 from a 4 banger. They are identical to your current axles, but are geared at 4.10. This will be about good enough. It's not perfect...but better than driving on 3.07.

I hate to give that as a solution, because it's more of a temporary work around. It really depends on your situation, ability, and the kind of wheeling you're going to be doing. Also depends on how cheap you can find axles, and the condition.

What kind of wheeling will you be doing?

 

[beefmobile]

4.88 for 33's is a little extreme especially if it's a DD. I'm running 4.56 on 35's and it's plenty for driving and wheeling. I have a Ford 8.8 and I suggest doing that as well...

 

[mholloway1809]

I run 4.88's with 33's on mine and its perfect for offroad or freeway @ 70 plus
I can pass without having to floor it or takeoff in 2nd from a stop.