C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

stock gear ratio

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Old Jul 14, 2005 | 11:05 AM
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From: port st. lucie Fl
Default stock gear ratio

I have a 89 automatic corvette what are the stock gear ratios ?
Thanks for any info.
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Old Jul 14, 2005 | 11:11 AM
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From: St. Peters MO Sometimes you have to prove yourself by doing alot of killing or alot of dying...
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If you check your RPO codes and compare it to Bogus' FAQ at the top of the page, you will get more than enough info. Without the RPO codes... there is no definite answer.
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Old Jul 14, 2005 | 11:24 AM
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From: Milan
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Search gor 'G' codes.
If you have a G92 code you have a performance axle ratio.
Then you have to find the other 'G' code .
My next G code is G....Idon't remember and it is a 2.73 ratio differential. (so the base should be a 2.59).
Now I have a 3.54.
-Beppe-
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Old Jul 14, 2005 | 12:40 PM
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Rpo Gm1=2.59
Rpo G44=3.07
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Old Jul 14, 2005 | 03:43 PM
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If you jack up rearend of car, the ratio is etched on bottom of differential.
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