3.42 rear end in auto
3.42 rear end in auto Anyone with 3.42s and auto trans what kind of rpms are you get on highway speeds. like 70mph. I dont have a tune yet I went from 2.73s and my speedo is off 18mph dont know if my rpms are. It seems that at 70mph my rpms are at 2500rpms.
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From: Decatur, TN (N-W of Athens)
I don't understand how rim size changes RPMs, but outside tire diameter is another story.
I can confirm that those stock-tire size speeds/rpms are pretty damn accurate since I now have 3.42s in an A4.
I can confirm that those stock-tire size speeds/rpms are pretty damn accurate since I now have 3.42s in an A4.
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I haven't had personal experience with 3.42's but my 3.23's were amazing on the highway. My 3.73's are a little too much for me on the highway but I would imagine 3.42's to be fairly nice.
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I got my 3.42 rearend for $100. Upgrading to the 3.73s for like $300 more is NOT worth the .05 ET reduction and worse gas mileage. Only way I'd change from 3.42s is to go to 4.10s but that would be a strip car only. And there's no way I'd not allow myself to drive this car OFTEN.