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buildingup 10-18-2010, 02:46 PM Going to the dealer today to possably pick up a new truck and wondering if anyone has picked one up with 4:10s yet. Truck will be getting lifted just wondering about the mileage difference with stockers and driveablility. kgt 10-18-2010, 03:57 PM picking up what??? duramaxes have ever only had 3.73 gears, no other ratio for the hd's come with the d-max buildingup 10-18-2010, 06:47 PM If you do the build online you can pick 4:10s if you so desire. There are also a couple members that got 4:10s from the factory in LMMs. I'm looking at selling/trading my truck in on a 2011 and have been wondering if anyone ever has ordered a truck with the 4:10s vs the standard 3:73 and how big of a difference it had on the drive-ability and fuel economy. WILLIAMJRDN 10-18-2010, 07:15 PM If you do the build online you can pick 4:10s if you so desire. There are also a couple members that got 4:10s from the factory in LMMs. I'm looking at selling/trading my truck in on a 2011 and have been wondering if anyone ever has ordered a truck with the 4:10s vs the standard 3:73 and how big of a difference it had on the drive-ability and fuel economy. only able to get 3.73 with d max as per site 4.10 and 3.73 for 6.0 k20 10-18-2010, 07:55 PM yeh if you click on the description of 4.10s it says you have to have 6.0. It wont automatically deselect it (seems to have a few bugs in operation) but the description says 6.0. Rader2146 10-24-2010, 06:49 PM Moved to New Vehicle Info. hillbilly_ryan 10-25-2010, 12:29 PM I wouldn't want 4:10's with the Duramax anyway unless I was planning on pulling tree stumps.... and my 3:73 rear handles that just fine. But you would notice a significant drop in fuel economy if you did have 4:10's. richard cheese 10-25-2010, 12:42 PM i know, with my 315/70/17's I would like to get some of my fuel economy back....i would rock the 4.10's buildingup 10-25-2010, 12:46 PM Only thinking 4:10s from factory because I plan on lifting the truck and running up to 38s...Time will tell though. First have to sell the current ride. richard cheese 10-26-2010, 05:15 PM if youre gonna rock some 38's 4.10's might not be enough to get you back into the sweet spot http://www.4lo.com/calc/geartable.htm from the above website Good "rule of thumb" calculation is to mutiply .12 by your tire diameter. (.12 X 38" = 4.56) | ||