6.6 Chevy gas engine

LITEPHIL wrote:
Very interested in the 6.6 gas 3/4 ton. Yes we are all spoiled these days, I remember the family of eight going up to the Sierras in my 54 Carryall/Suburban (that I still have) in the 60s, towing an 18 ft Aljo trailer and a Honda 90 on the front and rack on the roof. Dad was dancing between Granny and second all the way up and had to pull over a couple of times to cool her down and we ended up putting the motorcycle inside the trailer but what a journey that was.
My 2019 RST Silverado tows great with alot of power with the 5.3 and that 8 speed but once you tow with a 3/4 ton,it's hard to go back to a half ton.
I would like a ten speed but the couple people that I've talked to say its a non issue pretty much.

I'm skipping the 3/4 and going 1 ton. But that's more because of stupid tax rules in BC than what I need. Looking at Ford/GM, the 3500/350 is between $800 and $1,000 more than a comparable 2500/250, and gives around 800 lbs more payload. But in BC the 3/4 ton attracts a 3% luxury tax that is not applied to a 1 ton, so the 1 ton ends up cheaper out the door.

I like my Sierra, but with an 8,200 lbs trailer I am right at the limit according to the scale I went over last summer. But I do not want a diesel.

LITEPHIL wrote:
Very interested in the 6.6 gas 3/4 ton. Yes we are all spoiled these days, I remember the family of eight going up to the Sierras in my 54 Carryall/Suburban (that I still have) in the 60s, towing an 18 ft Aljo trailer and a Honda 90 on the front and rack on the roof. Dad was dancing between Granny and second all the way up and had to pull over a couple of times to cool her down and we ended up putting the motorcycle inside the trailer but what a journey that was.
My 2019 RST Silverado tows great with alot of power with the 5.3 and that 8 speed but once you tow with a 3/4 ton,it's hard to go back to a half ton.
I would like a ten speed but the couple people that I've talked to say its a non issue pretty much.

Wow, you guys were the whos who of campers back then!
Must see pics of the Carryall though!

Very interested in the 6.6 gas 3/4 ton. Yes we are all spoiled these days, I remember the family of eight going up to the Sierras in my 54 Carryall/Suburban (that I still have) in the 60s, towing an 18 ft Aljo trailer and a Honda 90 on the front and rack on the roof. Dad was dancing between Granny and second all the way up and had to pull over a couple of times to cool her down and we ended up putting the motorcycle inside the trailer but what a journey that was.
My 2019 RST Silverado tows great with alot of power with the 5.3 and that 8 speed but once you tow with a 3/4 ton,it's hard to go back to a half ton.
I would like a ten speed but the couple people that I've talked to say its a non issue pretty much.

gmckenzie wrote:

artie2908 wrote:
on a somewhat related subject... I have often wondered why the 6.6gas is compared to the Ford F250 7.3 gas 10speed? wouldnt a more aligned comparison be with the Ford F250 6.2 6 speed? That is Ford's gas entry level in the F250 and is much closer in engine displacement than 7.3 vs 6.6 It would be apples to apples and yes, I realize you can get the 10 speed in the 6.2 gas version but it's only in the top trim level.

Because they are both new engines for 2020 model year?

Been a GM guy for years, but between the 10 sp, choice of rear axle ratios and the e-locker, I'm probably buying a 7.3L F350 in the spring.

I agree, you have to compare new to new. Most just want to read about the latest/greatest.

The GM 6.0 6-speed and Ford 6.2 6-speed were apples/apples, and both good choices!

Agree, pretty hard to beat the Ford total package, in a new gasser!

Jerry

artie2908 wrote:
on a somewhat related subject... I have often wondered why the 6.6gas is compared to the Ford F250 7.3 gas 10speed? wouldnt a more aligned comparison be with the Ford F250 6.2 6 speed? That is Ford's gas entry level in the F250 and is much closer in engine displacement than 7.3 vs 6.6 It would be apples to apples and yes, I realize you can get the 10 speed in the 6.2 gas version but it's only in the top trim level.

Because they are both new engines for 2020 model year?

Been a GM guy for years, but between the 10 sp, choice of rear axle ratios and the e-locker, I'm probably buying a 7.3L F350 in the spring.

Over 16k miles, 13 mpg avg. Best 18 mpg, towing travel trailer and goose neck (9000 and 16k lbs) averaged 8-9 mpg, towing aluminum 16ft stock trailer averaged 11 mpg. 13-15 mpg on average for most tanks. Reg cab dually.

Retired JSO wrote:
I have a GMC Yukon 6.2, 3:23 rear gear and the 10speed transmission is flawless towing around 4,500 lbs, my golf cart and zero turn, and produces 13 mpg on the road at 65.

I have an Allison with an 8.1, which is only 340 HP and it works fine.

N-Trouble wrote:

noteven wrote:
Is the trans behind the 6.6 an Allison?

No, only the Duramax gets the Allison. You wouldnt want to turn that trans with a small block gasser.

Duramax doesn’t have an Allison anymore either. It has the badge, but that’s about it.
Although I don’t follow your logic. Are you saying the Alli would rob too much power?
They used it behind the 8.1 successfully, which I think had less power than the new 6.6 gas.

I have a GMC Yukon 6.2, 3:23 rear gear and the 10speed transmission is flawless towing around 4,500 lbs, my golf cart and zero turn, and produces 13 mpg on the road at 65.

noteven wrote:
Is the trans behind the 6.6 an Allison?

No, only the Duramax gets the Allison. You wouldnt want to turn that trans with a small block gasser.