2011Chevy

Good points-I agree. I’m paying 50% more per gallon for diesel here where I live. For me and the majority of people I know who own a duramax, it came down to a “want” more than a need for towing purposes. Some put a higher value on the options (LT or higher) at the lowest possible cost upfront and over the long term (maintenance of gas vs diesel)....if so then a 6.6 gas is the way to go, no question. Others place a higher value on the daily driving feel/experience of a 6.6 duramax, and are willing to sacrifice options if necessary to get it, if trying to fall within a certain budget. I will never hook anything to my truck that would be at or over capacity for the same truck with a gas powered engine. It is however more enjoyable to drive and tow (my opinion only) with the diesel. The gas will do the job just fine, it will just be doing it (at times) at a much higher RPM.

Good question-I can’t offer any insight into the 6.6 gas because they are hard to find around me. Dealers don’t order many and the ones they do seem to be gone fast. I haven’t yet driven one. I am very interested in trying one out and have read all I can find on here about peoples experiences with them so far. But, a WT with the duramax can be had for essentially the same price as a custom with the gas engine. Personally I’d opt for the less optioned truck with the diesel regardless of how much I tow, but especially if I were towing 9000 lbs into the mountains. I’ve got a 19 duramax now, so admittedly I’m biased towards the effortless torque and towing ability that comes with it, but I have had two 6.0’s in the past......in terms of towing experience and all around daily driving, there is no comparison (just my opinion), duramax wins hands down. Some don’t like the exterior looks of the WT, but I like the black grille on them, especially with white and red-I think the contrast looks good but looks are subjective.

Agreed. I’ve owned 6.0’s in the past, so I’m familiar with the consequences in that engine. Would still like to get feedback from anyone who has gone with larger than stock tire sizes on one of the gas burners

Anyone?

Thanks for the info. Your truck looks awesome

That’s good to hear. Your truck (LT) and this setup is what I’m looking to do when I get my 2021. do you have any idea how bad your buddy’s mpg is on his 6.6 gas with the 295s?

Bryant87-your truck looks fantastic on the 37’s! First one I’ve seen with factory 18’s and a larger than stock tire. I assumed the 11.50 would rub less than a 12.50 on factory wheels but I haven’t seen either setup up close to verify. Either way, well done. How does it ride and drive compared to stock?

Thanks. Yea I’ve looked at a lot of mpg threads and have yet to see anyone mention the 6.6 gas is at relates to larger than stock tires. But being that my current duramax and every other truck I’ve ever owned had larger tires (usually 35’s in tread patterns from mild to full on mud tires), I am most certainly aware that it has an impact to a degree. Just wanted to see if anyone had first hand experience with the new engine.

Is anyone running larger than stock tires on a new 6.6 gas 2500 or 3500? Interested in learning about what kind of hit your mpg took if so, and would love to hear any feedback on your setup.

Wow, not good. Not the first post I’ve read regarding the same sort of vibration on the new 1500 with DFM. Is this issue only in relation to the 8sp and 5.3 DFM combo? The reason I ask is because you stated the 6.2 with 10sp is a huge difference, although I know the 6.2 has DFM also.

What size rear block did you get and where from? Which leveling kit?

Truck looks great! Does it have a 2” level on it? What size tires?

Your truck looks great! What tire size? Is it leveled in addition to being a trail boss, or is it stock?

Agree....I don’t like the sound either, the regular 3.5 ecoboost has no sound, while the raptor sounds like a civic with aftermarket exhaust when you get on it. Actually, the trail boss looks (to me) much better than a raptor. I’ve never really cared for the look of them.

I test drove a new trail boss with around 10 miles on the odometer, in moderate traffic conditions for part of the drive, and noticed the hard downshift twice. It felt exactly the same as the way my ‘17 tahoe 6sp tranny shifted BEFORE I disabled the AFM. I also felt the torque converter locking/unlocking with the cylinder deactivations. Test drove a RST and LTZ a couple of weeks later with far less traffic and higher speeds and felt no tranny issues. I really like these new 19’s, but am hesitant to buy one with this particular ongoing issue. Seems that disabling DFM may solve the majority of this, but no one yet has products available to do so. I can tell you that my ‘17 tahoe drives like a completely different vehicle operating on all 8 cylinders 100% of the time. I had a 14 with the 5.3 and 6sp that was at the shop 3 different times for hard up shifts/downshifts that could not be resolved (“transmission operating as normal” per dealer). I traded that piece of junk in less than a year, don’t want to be in that position again!

Ok thanks. I’d stay with the factory wheels and just go bigger on the tire size if I end up with one.

You truck looks awesome! Did you use the zone 2” level kit on it?

I’ve personally seen a trail boss LT with 295/70-18 Nitto Ridge Grapplers on the black factory 18’s that did not rub