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ksa8907 · 01-25-2016, 08:26 PM

Are you certain you have 4.10 gears? I think you might have 3.92's. 3.92 would be 1787rpm @60mph and 4.10 would be 1867rpm @60mph. 3.55's were optional, 1622rpm @60mph.

01-25-2016, 08:26 PM	#25 (permalink)
ksa8907 Master EcoModder Join Date: May 2012 Location: Tampa, FL Posts: 1,745 Volt, gas only - '12 Chevrolet Volt Premium 90 day: 38.02 mpg (US) Volt, electric only - '12 Chevrolet Volt Premium 90 day: 132.26 mpg (US) Yukon Denali Hybrid - '12 GMC Yukon Denali Hybrid 90 day: 21.48 mpg (US) Thanks: 206 Thanked 420 Times in 302 Posts	Are you certain you have 4.10 gears? I think you might have 3.92's. 3.92 would be 1787rpm @60mph and 4.10 would be 1867rpm @60mph. 3.55's were optional, 1622rpm @60mph. __________________