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9inch and gearing

This is a discussion on 9inch and gearing within the Drivetrain forums, part of the LSx Technical Help Section category; Lokking into buying a 9inch rear and just want to know what will i need for install,and what damn gears ...

  1. #1
    Member RedHot99T/A's Avatar
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    9inch and gearing

    Lokking into buying a 9inch rear and just want to know what will i need for install,and what damn gears to go with im torn between 4:11 or 3:89's im so confused to whats better for me.i have a 6-speed and heads/cam/intake and eventually gunna do a stroker in a few years,its driven on a few longer drives once and awhile and im looking for fun but dont want to lose the highway drivabilty to much.any info/opinions are welcome.

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    Member RedHot99T/A's Avatar
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    Oh yea! It is a m6

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    None Shall Pass Knight's Avatar
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    You will need an adapter u-joint for the driveshaft to mate to the pinion yoke. Also, many choose to upgrade to an adjustable panhard bar, lower control arms and relocation brackets, torque arm, ect. Depending on where you purchase the rear from, some of these options are available when you order. You may also need to install your backing plates on the axles, and have the axle bearings pressed on. Reluctor rings too, if you are retaining abs/tcs. They can usually be installed from the factory as well, if you choose.
    Last edited by Knight; 10-28-2011 at 07:15 AM.

  5. #5
    Member RedHot99T/A's Avatar
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    1999 Trans Am ws.6

    i knew about the ujoint,so it would deff be good to upgrade all of that...do they all have t be adjustable?
    99 Ws.6-Hooker LongTubes,Ms4Cam,Polished 243 w/3angle valve job,MTI Clear Lid,P/P ThrottleBody,F.A.S.T Intake,31lb Injectors,EGR/PCV Delete,3inch True Duels W/Magnaflow Mufflers,Duel E-Cutouts,Weld In SFC,Stage3 ACT Clutch.

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    None Shall Pass Knight's Avatar
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    I would suggest at least the panhard bar. The rest will depend on the main goal for the car.

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    Member RedHot99T/A's Avatar
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    1999 Trans Am ws.6

    ok,well it will be at the track atleast 6-8 times a season...so i might as well save and do it right with the suspension parts....

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    You'll want adjustable components if you are lowered or plan on lowering your car in the future.

  9. #9
    Member RedHot99T/A's Avatar
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    Alright,I do plan on lowering I have all the shocks/springs already

  10. #10
    None Shall Pass Knight's Avatar
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    Adjustable is the way to go then. I always prefer adjustable anyways, but that's just me.

  11. #11
    Senior Member INMY01TA's Avatar
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    You don't lose any highway drivability w/4:10s.

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    With 4:10's you may lose 15 mph on your top end. So you can do 155 instead of 170. But the bottom end is going to be awsome.

  13. #13
    Member RedHot99T/A's Avatar
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    hmm well im being sold on the 4:11s..lol nowhere to got hat fast here neway i love the accel better...

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