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Tru2Chevy · 08-19-2009, 06:42 PM

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

08-19-2009, 06:42 PM	#2
Tru2Chevy Co-Founder / Site Admin Join Date: Jul 2004 Location: Ewing, NJ Posts: 22,476 iTrader: (8) Social Networks:	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 __________________ 1999 Camry - Beigemobile DD 2002 Suburban - Wife's DD 2004 Grand Cherokee - Not running / Project / Selling?