Ok I can get a used T-case for 60$ out here at the U-Pull-It place and I've seen the MC adapter and read the instructions. So I'm looking at about 450$ total for the parts and fluids and I do the work myself.

Anyone done this? is it really worth the hassle or would it be better to go with lower gears in my current t-case?

Thanks bunches!

 

U forgot to add in driveshaft work and a new crossmember/skidplate

 

The Marlin Crawler is the best option any day of the week. Well worth every penny, you will NEVER regret it. Check out his site for what you will actually need.

 

dual cases VS Just one low case depends on what you are doing.

Myself, i went with the 4.0 gears AND a dual case. It gives me 15 forward gear options, so i never have to worry about finding the right gear

 

I guess I should have added that this is a DD and weekend rock rig. I think I'll save money on just doing the dual factory cases and it'll get me down around 90:1 final drive but wanted some opinions from those of you that do this kind of thing on a regular basis. I think that'll be enough for 31's.

Thanks again.

 

If you have a manual tranny they would be worth it for sure.

If I had it to do again with an auto, I'd just get one extra low case. My 2nd gear in my ultra low case is about the same as 1st gear in the nomal low case. Combine them both in low and its just crazy low. So I'm either using one or the other but not both together.

 

I've done both.

Started with a single 4.7 case, then went duals.

Duals is HANDS down the way to go.

the 4.7 is sweet, but is limited. I had many ocasions when it wasn't low enough, and on the smoother roads when I'm camping, its far too low.

When I'm camping, and want to go just a little slower, stock low is good, for most of my trail running, 4.7 gets used, and obstacles I use 10.7.

Definetly worth it.

x2 on the money, you need to factor in a new crossmember and driveline mods. Combined, those cost me about 450 bucks.

 

So you went with a dual set up with a 4.71 main case and the stock 2.28 crawl box in front of that? Sounds neat.

I can't afford the 4.71 gears or case swap through MC so I'll be putting a 2.28crawl box in front of my stock 2.28 case. Just a little over 5:1 with both of them in low.

Thanks for the info!

 

I didn't mean you had to go with 4.7 rear, 2.28 front like I do, but was just responding to your question of dual cases vs a single geared case. I would much rather have the option of going to stock low range, as a single geared case is too low.

 

x2

2.28 for BETWEEN the obstacles

5.20 for ON the obstacles

NOTE: If you have a V6, you'll need to adapt to 23 spline, may as well get the 4.7's while you're at it.

 

Pretty much EXACTLY my feelings as well. I only have the 4.7 in mine and wished I had gone with duals. My next mod is going to be just that with stock gears in front and the 4.7 in back as well as a twin stick in the aft box. An added benefit (for me anyway) is a longer front drive shaft. I have so much flex in front that I have binding issues and had to strap it. Im hoping this will solve front drive shaft/link clearence issues as well, allowing me to go back to a HP front 3rd.

 

That is my exact set up.

Funny when people get in who don't own 4wd's.

They stare and ask, "Why do you have 4 shifters?"

 

Just tell them it's becuase you have 4 tires...... then look at them like they're crazy for not knowing that.


Twin stick huh? That's a dang good idea right there.

 

you should put the 23 spline output shaft in regardless if you have a v6 or not, its only $120 more and adds a lot of peace of mind on the trail. its good to have the stronger 23 spline because of all the torq that is created with duals.

 

Any of you guys with duals ever break an engine mount? I've heard it can be a problem so I chained mine down.

 

not yet....I probably should though....I've been told my engine moves around quite a bit

 

add a couple brake levers and their heads would explode

 

no. Not really concerned, since I have all of 95 horsepower.

 

What about the torque though in double low?

 

I would be careful here. I have seen several trans/tcase housing split because everything wasnt allowed to flex at the same rate, ie...different material used for motor mounts and tcase mounts or solid motor mounts and factory style tcase mounts(or chained down motors). This phenomenon is exaggerated as the distance between the mounts is greater and the gear ratio is lowered. It is also worth mentioning that those flexy mounts help absorb driveline shock.
just my .02