Whats my 1990's original rear differential gear ratio?
10-30-2003, 09:46 AM
#1
Drifting
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Whats my 1990's original rear differential gear ratio?
I had Dana 36 373 rear end gears put in a few years ago. I recently tore them up and I put the original gears back in. When I changed over to 373's I also had the speedo gears changed. Now that the original gears are back in I forgot to have the speedos changed and I have forgotten the ratio. Does anyone now the original gear ratio for a 1990 L98 differential. It did not come with the optional performance rear. Any help is appreciated!!! Thank you vettefast :confused:
10-30-2003, 09:53 AM
#2
Safety Car
Re: Whats my 1990's original rear differential gear ratio? (vettefast)
Look under your center console lid for the RPO codes. 3.07 = G44, 2.73 = GU2, 2.59 = GM1 Its most likely 2.59, but the RPO code is the 100% accurate way to determine the stock ratio.
10-30-2003, 09:59 AM
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Drifting
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Re: Whats my 1990's original rear differential gear ratio? (dgoodhue)
Thanks alot! every time I go to buy the speedos the dealers couldn't help me! You ave been a big help! Vettefast :party:
10-30-2003, 10:02 AM
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Drifting
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Re: Whats my 1990's original rear differential gear ratio? (edsalinas)
Hello, I tried that and I couldn't find it marked on the outside anywhere. Thanks! vettefast :nonod:
10-30-2003, 10:49 AM
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Re: Whats my 1990's original rear differential gear ratio? (dgoodhue)
Look under your center console lid for the RPO codes. 3.07 = G44, 2.73 = GU2, 2.59 = GM1 Its most likely 2.59, but the RPO code is the 100% accurate way to determine the stock ratio.
10-30-2003, 11:15 AM
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St. Jude Contributor
Re: Whats my 1990's original rear differential gear ratio? (vettefast)
Hello, I tried that and I couldn't find it marked on the outside anywhere. Thanks! vettefast :nonod:
