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Thread: Advice, and Reccomendations.

  1. #1
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    Default Advice, and Reccomendations.



    A little background first. We have a 2000 xj, automatic, with 3 inch lift, 31 inch tires, Dana30 front axle, and chrysler 8.25 rear, and 3:55 gears. I have come to the realization that I need different gears, not only for highway use, but for lowend while four wheelin. I am thinking about 4.56:1 gears as I hope to increase tires to 33's. Two questions.
    1. Am I thinking in the right about the gears?
    2. Any recomendations on who to bring it to for the work. Not something I feel comfortable in doing. by the way I am in Littleton.
    Thanks in advance Phil

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    Default Re: Advice, and Reccomendations.



    Phil, gears for sure are right direction.
    33' with 4.56's will turn a bit high on the freeway, but you will find it will have the power for passing.
    4 speed auto upgrade will be a good Idea!
    Get hold of multiscuff the shop he userid in Littleton and great prices.

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    Default Re: Advice, and Reccomendations.



    Here's a gear calculator you can mess with to see what your results might be.

    http://www.offroaders.com/info/tech-...inionGearRatio

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    Default Re: Advice, and Reccomendations.



    With 4.56 gears, at 65 mph, my Jeep should be turning about 2300 RPM in overdrive (70% overdrive for the older XJs) with 32.5" tires. That is where my engine starts to produce torque. .

    I had Dutch install the 4.56 gears in my project axles, but I don't think he does side work these days.
    ___________
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    Default Re: Advice, and Reccomendations.



    dieseldoc previously posted:
    "Phil, gears for sure are right direction.
    33' with 4.56's will turn a bit high on the freeway, but you will find it will have the power for passing.
    4 speed auto upgrade will be a good Idea!
    Get hold of multiscuff the shop he userid in Littleton and great prices"

    Hey Phil I sent you message this morning but just incase you like to ready the post more the shop I use for my rig is The Edge 4x4 - The owner's name is Chris tell him I sent you He has great price's and can get you in farely quick if he's not got a huge build on the table!

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    Lowfill (March 2nd, 2016)

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    Default Re: Advice, and Reccomendations.



    Heya Phil!! What they said...........

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    Default Re: Advice, and Reccomendations.



    Called the guys a edge 4x4 and they cannot get me in till the middle of april, so I guess I have time to figure out exactly what I want. Thanks again all for the advice will see what happens.

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    Default Re: Advice, and Reccomendations.



    just an option, if you can live with 4:10 a lot of XJs came with that ratio and atleast the front axle could be a bolt out / in deal. I swapped my YJ's front axle, stock 3:07 for a 4cyl YJ front axle, stock 4:10. I paid $50.00 for the axle and it bolted right in.

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    Default Re: Advice, and Reccomendations.



    most the good shops will be fairly backed up.
    the Brucker brothers in foco are booked like 7 months out.

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    Default Re: Advice, and Reccomendations.



    Paul previously posted:
    "just an option, if you can live with 4:10 a lot of XJs came with that ratio and atleast the front axle could be a bolt out / in deal. I swapped my YJ's front axle, stock 3:07 for a 4cyl YJ front axle, stock 4:10. I paid $50.00 for the axle and it bolted right in."

    This and a 8.8 ! Your set i would think.
    My yj is on 33s D30 front 411and 8.8 rear 410s
    But i have a 5 speed, not sure how much change you will get from an auto to stick.
    I have been working on a 01 xj for a few weeks now, hes also 4.0 auto on 3.55s and it seems to do pretty good in the city and high way an im pretty sure he will do great off road. Hes sitting on 32s and a 4.5 inch lift

    Are you planing on running lockers ?
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    Default Re: Advice, and Reccomendations.



    What is the mileage of you XJ?
    ___________
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    Default Re: Advice, and Reccomendations.



    Josh at sffcustoms.com may be another one to try.

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    Default Re: Advice, and Reccomendations.



    Phil is your XJ a DD?
    My 87 XJ hp30/44 has 4:88 and I started with 33's and really like the overall performance both on the street and off road. I think the 4:56 is right on track for 33's I just went 4:88 because the cost was the same and I though I would eventually go to 35's which I did. Also FYI your front D/30 (is it HP30?) either way will need a new larger carrier for 4:56 gears.

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    Default Re: Advice, and Reccomendations.



    Lowfill previously posted:
    "Called the guys a edge 4x4 and they cannot get me in till the middle of april, so I guess I have time to figure out exactly what I want. Thanks again all for the advice will see what happens."

    Sounds about right for a job like that Give me you time to think about everything you want to the T.

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    Default Re: Advice, and Reccomendations.



    96EXXLTinCO previously posted:
    "Josh at sffcustoms.com may be another one to try."

    So I guess Josh is booked out through April as well.

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    Default Re: Advice, and Reccomendations.



    Yeah Josh is busy as hell. He cranks out 8.8 conversions into Jeeps.

    I have 4.56 gears and 33" tires. Great combo for the transmission gearing in my Explorer. I'm basically the same as a stock Explorer with the 4.10 towing ratio that was offered as a factory option. If I wanted to grow to 35s, it would knock me down to the equivalent of the 3.73 ratio- which is still better than the 3.55 that I started with.

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    Default Re: Advice, and Reccomendations.



    Well we all must have been thinking the same. Got ahold of Josh at sffcustoms, and he is going to build me a 8.8 with 454 rears and replace front with the same.
    Best part is he can do it the end of next week.

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    Default Re: Advice, and Reccomendations.



    Tell him his favorite Explorer customer says "Hi".

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