Gas mileage update! The 6.0 is getting MUCH worse gas mileage than the 5.3. I didnt think it would be a big difference but it sure is. getting like 14mpg
. Its been tuned by two of the top tuners in the US as well. I baby it as well. I wish i never put it in. My 5.3 got at least 18 in town. Also I thought i would notice the torque increase around driving around town but its not that huge of a increase.
Update. The factory 6.0 needs a bigger cam in it. I did this and I enjoy the 6.0 now.