GMC 5.3 or 6.2 Liter Engine?

wildwest450 wrote:

The Texan wrote:
The only trouble with the "movie trailer" is the lack of using facts about mileage. In the real world, the 6.2L is getting the same and in many cases, better mileage than the 5.3L, so mileage is NOT a factor.

Gm is claiming a best in class 23mpg for the new 5.3, I see no such claims for the 6.2, perhaps you can provide some proof?

I just returned from a trip pulling a KZ BHK with my 2013 Silverado. 5.3 3.42 rear. The trailer loaded was 7250lbs Was not over weight in any of the weights. Have the weigh ticket in the truck if anyone wants true numbers. Was close to the GVWR but truck pulled this trailer just fine. No we didn't have mountain roads to drive (Florida, Georgia, Carolina and Alabama) is where we traveled. Ran 70mph @ 3000 RPM in 5th gear and gas mileage was around 8 to 10 MPH. I have yet do the math on the fuel receipts so it may be a little better. I am sure if I dropped the speed to 65 or even 60 it would have been better. Plenty of power never had a lack of. Now with that said, if I was a full timer, I would go with the bigger 6.2. But seeing we are only taking a few trips a year, it works for us. I am sure there will be some that will not agree with me but this is only my opinion and it works for us. Just to add to this, I have been pulling trailers for over 25 years of all sizes and weights. Would this be something I would recommend to a first timer.........maybe not.