GMC 5.3 or 6.2 Liter Engine?

The Texan wrote:

N-Trouble wrote:
Well as an actual owner of several 5.3 motors in my family and now my brother having a 6.2 I can tell you the mileage is not on par as Texan would lead some to believe. THe 6.2 is a thirsty motor but will pull much better than the 5.3 as previously stated. Seeing as how the OP lives in Florida I suspect much of his towing will be on flat ground where the extra grunt of the 6.2 is likely not needed. IF you care about mileage get the 5.3... If you want some extra grunt and mileage isn't a big concern get the 6.2

If you think my numbers are misleading, then I highly suggest you visit the GM truck forums and call the hundreds there that are reporting the same mileage with the 6.2L liars also. Keep your foot out of the throttle and you can get good mileage. Drive it like you stole it, as many do and you will not get decent mileage. My figures are hand figured from my driving habits and if you think I am lying, then so be it.

You're not lying. There is a big misconception out there about the 6.2 1500 Silverado's. Most people say the mileage is horrible after experience's with 6.0 motors in 2500 HD's. They are not the same. I don't pull a camper with mine, but I do pull a 4000 lb bass boat. My mileage towing at 70mph is 12.5.....the same as when I pulled with 5.3 liter trucks with either a 3.73 or 4.10 gear. My 6.2 is in a 2010 LTZ Crew Z71 with the 3.42 rear. Solo, I've gotten as high as 19 with 18 being more common. I figure solo, the 6.2 probably gets 1-2 mpg less than the 5.3's but no more than that. Towing, the mileage is identical which is amazing considering the 6.2 has 88 hp more than the pre 2014 5.3 and 82 ft lbs more torque. The new DI 5.3 in the 2014's has impressive numbers, but if I were buying new I'd get the 6.2 again in a heartbeat.