T-case Doubler

[Smiley Queen]

We heard this would work, what are your opinions? NP 231 doubled with a Dana 300. George wants to know.

[CumminsJeep]

yes thats a pretty common combination

[xjeeper]

found quite a bit just searching around google for np231 to dana 300 doubler so i would definitely say there is potential for that plan.
http://www.pirate4x4.com/forum/showthread.php?t=660590

[Smiley Queen]

Thanks! George's wheels are REALLY turning now.

[HitItWithSomeSpeed]

I would say the np231-d300 is a good setup to go with, and probably your best bet.
cheap and strong.

I actually have looked into this quite a bit if you need any info. ill post more of what i know in here tomorrow, but right now im to lazy to type.

i will say that you should expect to spend at least $250 on the intermediate shaft to connect the two.

whole kits go for like $500 i think.

PM me if i dont get back to this thread.

[customcreationsllc]

I did the NP231 Dana300 combo. Worked out nice.
I would suggest putting another mount on the 300 the 231 case isn't that strong.

The doubler kit is like $500 if you going to put it in a YJ or XJ you will need to get a flip kit for the Dana 300.

FYI: You need to internally modify the Dana 300 shifter shaft to get a true twin stick.

You get a lot lower crawl ratio and it's cheaper than diff gears.

Let me know if you need the aluminum end plate welded on, or help with anything else. I just noticed your in PA it might be a hike.

[JoeNitro]

nice

[Hydra]

i would totally do this, if i had the 300, what do you have to fb up for a new mount?

[PapaGeno21]

One of my friends did this on his MJ..

Thing is absolutley SICK. Talk about having 4LO...

[HitItWithSomeSpeed]

its also shorter than a stock np231 which is cool. thats why im looking to do this on my CJ project. its an awesome setup.

[HitItWithSomeSpeed]

http://www.pirate4x4.com/tech/billav...ler/index.html
and mad rooster was selling kits for a while:
http://www.pirate4x4.com/articles/pr...ws/mad_rooster


And George, Lisa, I want you to know how much I like you guys. as I went over to that hell-hole pirate to find these links. I hope they help

[customcreationsllc]

To fab up a mount on the Dana 300 isn't bad.
I took out the 4 bolts on the back of the Dana 300 replaced them with studs so I can bolt a plate on then used a shackle bushing to mount to the cross member.

You already have the 231 you just need a 300

I looked at as a cheap way to get lower crawl ratio and twin stick.

Cheaper then just a Tera low 4:1 kit.

[customcreationsllc]

I used 4X4machine I couldn't get in touch with Mad Rooster.

[HitItWithSomeSpeed]

is duffy still producing kits? because i cant find the link.

[customcreationsllc]

i bought it a year ago he used to post them on ebay all the time i just called him up and he said he had a bunch on the shelf.
He still has other things on ebay so I'm guessing he is still around.