Okay, I realize this topic has been beat to death...but not for the Tahoe/Yukon folks. When I tow, the I can't seem to break 60 mph without going into 2nd. I tow a 26' travel trailer with my Yukon 5 times a year. The trailer weighs 5000lbs. I tow various other items but with a utility trailer. I would like to upgrade my 3.73's to 4.10's very soon. Our trucks (as you know) ride very quiet at highway speeds due to RPM. How much RPM will I gain with the 4.10's? Also, in your opinion, is it a worth while mod? Yes I will be tuning with Nelson if I do the swap. My next post will be about beefing up the 4L60e. But for right now I am just trying to justify the 4.10's and tuning. Thanks all.