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Gear swap

This is a discussion on Gear swap within the Drivetrain forums, part of the LSx Technical Help Section category; how much would it cost me about to change the gears in my rear end. i have 2:73 and it ...

  1. #1
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    Gear swap

    how much would it cost me about to change the gears in my rear end. i have 2:73 and it ticks me off because its to slow off the line.

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    or what gears should i put in it?

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    Just me Y2KPewterSS's Avatar
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    3:73s are what most auto trannies upgrade too. You won't be slow off the line anymore.
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    Member jcws6's Avatar
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    I'm about ready to do this myself in my M6 TA, so the costs are fresh in my mind. Here's the estimated totals:

    Gears - $175-200
    Install kit - $75-90
    Solid pinion bearing spacer (optional) - $17
    Gear oil - $10-15
    GM LSD additive - $5
    Labor - $250-350

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    are 3:73's gonna be to low of a gear to be able to drive around and still get decnet milage?

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    Member tg580's Avatar
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    I'm thinking of doing the same thing. What type of gains in the 1/4 are typical from a stock car?

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    Junior Member 98ta_ra's Avatar
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    id like to know the same thing ...,ive heard the most u get is round 2 to 3 thenths of ur e.t....not sure though.. i had bought some 373's but didnt fit cuz they had sent the wrong series, nedded 2 series and they sent 3.
    98 ta ram air, a4,transgo stage 2 shift kit, 342 gears ,2 1/2' magnaflow exhaust(or cut off),obx lt headers, custom y pipe,volant cool air intake,port/polished throttle body and maf too, and tune...more on its way

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    Member tg580's Avatar
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    ttt

  9. #9
    Junior Member 98ta_ra's Avatar
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    Quote Originally Posted by Al Hazz View Post
    how much would it cost me about to change the gears in my rear end. i have 2:73 and it ticks me off because its to slow off the line.
    ny gears had cost me 324...the mech. told me that i had to buy the whole shim and bearing kit to do the swap wich had cost me 146$...and to install he was gon charge me 230....but then after da whole rear end was taken apart gears were bout to go in and then found out that they had sent me 3 series 373 instead of 2 series ...so had to go back to the stockers 273's and returned gears,got my money back and jus spent it on the volant intake..but 373 will be coming in soon...Oh and as for the shim kit,make sure u need it, cuz lot of ppl been tellin me that i didnt really need them..not sure though

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