Thread: Gears and rears
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Old 08-19-2009, 07:35 PM   #3
NJ346
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Quote:
Originally Posted by Tru2Chevy View Post
You are looking at 121mph in 3rd gear (A4 car, right?) with the 4.10s. Also, you would be turning 2800 RPM @ 75mph in overdrive.

The current 3.73s would allow you to run to 133mph in 3rd gear.

This is assuming a radial tire. If you're running a bias ply you can assume some growth, and you'll have a few more mph to play with on the top end.

- Justin
did you factor in converter slip?
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