Thread: Overdrive
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Old Sep 20, 2003 | 10:27 PM
  #10  
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S2Kev
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Originally posted by Kai
Very. If fourth was not an overdrive, they would be complete gas pigs.

For those who don't know what e30dood means by "direct drive," it is a gear ratio of 1.00. One turn into the transmission equals one turn out. Any gear ratio with a number less then 1.00 is considered an "overdrive," where the engine is turning slower then the transmission output before the final drive gear.

Year 86-87 88-89
1st 2.705 2.705
2nd 1.560 1.560
3rd 1.031 1.027
4th .777 .780
Final 4.214 4.214

Year 90-93
1st 2.647
2nd 1.483
3rd 0.974
4th 0.725
Final 4.428

I don't have specs for the 94+, but the gearing is probably very similar, if not the same, to the 90-93.
It's just that not many auto's come with overdrive so yeah. Anyways, back on topic.
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