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Message: <blockquote data-quote="Marky Dissod" data-source="post: 25213" data-attributes="member: 13218">My Tahoe Z71 has 3.73 axles. To make a long story short, I'd be SO MUCH HAPPIER if it had 4.10s.Don't forget:You'd spend more time in 4th (w/ TCC LOCKED) & 3rd (w/ TCC LOCKED), less time in 2nd.Your city / metro / urban MpG would definitely improve, question is by how much.Even if your highway MpG does not improve - and it very well might depending on how you drive with 4.10 -you're delaying your transmission's next rebuild, whether or not you're interested in the durability and/or the tow rating improvement.Point is some of the benefits of more gear are not immediately obvious.If you don't like it you can always go back to 3.73 & give the 4.10s to someone else who'll appreciate them</blockquote>