Steel d30

[WickedBruce]

I'm about to buy that sumbitch. I had it added into my cart last night, along with 4.56 gears and bearing kit, and the D30 carrier. Marlin doesn't have any 4.56 rears listed, so I shot him an email. If all goes well, I'll be $2300 poorer

 

[John3seventeen]

opcorn:opcorn:opcorn:4:88's?

 

[WickedBruce]

I thought about it, but I believe with 245/75/16 all my shit will be spinning like crazy

 

[twowings]

This is going to be good...:gr_grin:

 

[WickedBruce]

He doesn't have the brand of gears listed when you select what ratio you want. Still waiting on the response. If I got 4.88 I'd certainly need larger than 30.5" tires haha

 

[twowings]

Of course you would....:ROFLJest:

 

[John3seventeen]

It would be wicked quick that's for shure!

 

[WickedBruce]

I'm mainly doing this to improve my fuel economy. Hopefully it'll help. Once my lt ifs is done, I'll get a 33", but I don't need anything bigger

 

[twowings]

That's what she said...


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[the_dealer]

I'd go 4.88 and do it once personally. I promise you after a few months you'll wish you did. These Kj's aren't as friendly to do front gear changes as it is, then factor in cost to regear front/rear, plus labor if you have to pay someone. I'd go as low as possible and ride it out until tire time. Take the scenic bypass route lol. I don't think it will be too bad, about like driving with o/D off. U might can make some money for new tires between stop lights if you launch in 4wd lmao.


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[WickedBruce]

Lmao. I've never even driven with od off, actually. Hm...

 

[John3seventeen]

Lmao. I've never even driven with od off, actually. Hm...

Really? Mines never on unless I hit the highway. Best gas mileage I get is at 55mph with the overdrive off.

 

[WickedBruce]

Hmm...interesting. I've been getting 14.5-15mpg for about a year and a half now. Switched to a k and n filter when I'm not wheeling, now it's about 15-16mpg. Never turn the od off though

 

[tjkj2002]

I'd go 4.88 and do it once personally. I promise you after a few months you'll wish you did. These Kj's aren't as friendly to do front gear changes as it is, then factor in cost to regear front/rear, plus labor if you have to pay someone. I'd go as low as possible and ride it out until tire time. Take the scenic bypass route lol. I don't think it will be too bad, about like driving with o/D off. U might can make some money for new tires between stop lights if you launch in 4wd lmao.


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I wouldn't want 4.88's in a 8.25,requires grinding a good a few teeth on the ring gear to install the center pin.


4.56's and up to 32" tires would be perfect on a KJ with the 45RFE trans.

 

[the_dealer]

Yeah but so does an 8.8 with lunchbox locker and people do it all the time without problems. Completely different axle, but just saying

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[WickedBruce]

Honestly I'll probably just stay with the 4.56, upgrade to 285/70/16 duratrac, or if I can find a skinnier taller tire I like I'll do that. Then later I'll pull the diff and do my arb locker

 

[tommudd]

Honestly I'll probably just stay with the 4.56, upgrade to 285/70/16 duratrac, or if I can find a skinnier taller tire I like I'll do that. Then later I'll pull the diff and do my arb locker

4.56s and 32s thats it
perfect all around
and done
wouldn't go to 33s on a KJ even with steel front diff

 

[WickedBruce]

Well it's got some other things planned to help it turn the 33's. Hopefully she will be in around 12" of front travel soon too

 

[profdlp]

This looks like quite the project. Good luck! :favorites13:

 

[WickedBruce]

Well my 4.56 gears and install kits got delivered today, can't wait to get home and open them up!!

Diff should be here in about 2 weeks