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  • HELP,,, Question on Gears

    ok,, i have a 1997 firebird WITHOUT the Y87 package, so i think my car has 3.23 gears in the rear. i would like to get 3.42's so i get a little better bottom end. How would these gears throw off my speedometer reading,, and would the car govern out at a slower or faster speed,, or would it still govern out at the same speed as it does now with the factory 3.23 gears???
    Thanks for your help in advance
    99TA

  • #2
    Throws it off about 7 mph in the good way i have a set of 3.42's someone said they might buy them i'm waiting till fri for them but i'll sell them of you need them 85 shipped
    My new ride 2000 camaro, No mods yet still waiting for warranty to run out then all out heads, cam, and supercharger

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    • #3
      it wont throw it off that that far...going from 3.23 to 3.73 throws it off 8mph at 70mph...so it reads 78 when ur actually going 70...SLP makes a processor to calibrate the speedo, P/N 63007 or P/N 63008 depending on the year model...
      <b>Black</b> 1998 Pontiac <i>Firebird</i> A-4 swap<br />271.4rwhp/259.4rwtq NA<br />13.30@102.44 <br /><a href=\"http://www.freewebs.com/wickedsix98\" target=\"_blank\">www.freewebs.com/wickedsix98</a>

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      • #4
        Yeah, that SLP speedo recalibrator will work for your car, but not on our V6s. I have yet to see one work on the V6.

        Scott

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        • #5
          are you serious scott??? i just bought one for mine!!!!!! im gonna be pissed if it doesnt work!

          edit: do you mean on the automatics?? i hope thats what you mean!!

          [ May 07, 2002: Message edited by: WickEdSix9838 ]</p>
          <b>Black</b> 1998 Pontiac <i>Firebird</i> A-4 swap<br />271.4rwhp/259.4rwtq NA<br />13.30@102.44 <br /><a href=\"http://www.freewebs.com/wickedsix98\" target=\"_blank\">www.freewebs.com/wickedsix98</a>

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          • #6
            It throws it off about 12% So the faster you are going the worse it gets.
            -Jason<br />Black 1993 Pontiac Firebird -Retired<br />Black 2002 Pontiac Trans Am -Sold-<br />Green 1996 Corvette Convertible -Sold-<p>In the market for \'67-\'73 Firebird!

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