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Open Roads Forum  >  Tow Vehicles

 > How's that 6.6 gas working for you?

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blt2ski

Kirkland, Wa

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Posted: 02/04/22 05:01pm Link  |  Quote  |  Print  |  Notify Moderator

I'm pulling semi frequently a 6500 lb trailer with a 4.3 V6 dual cab 4x. I'm positive the 5.3 would be faster, quicker etc. Especially with the 8 or 10 sp trans. With that said, the 4.3 6 sp pulls this trailer power wise every bit as well or better than the BB 454 3 sp auto setups I used when I bought said trailer back in the early 90's. Granted this is an equipment trailer with a smaller excavator, so not a lot of wind resistance vs an RV trailer.
I did put a 1500 lb helper spring on it, it does not sag as much as stock with 3900 lb springs. I did gain about 1.5-2" of ride height..... balanced this out with a 2' Leveling strut kit..... rides better too.

I've gotten 25 on the freeway at 60 mph, a friend of mine with an equal 5.3 has gotten 22-23. Hes about 3 mpg less in the city. Both of us have the cylinder shut off option. If you do not get this, you can figure getting 2-4 mpg on the freeway less than having this option. I don't get as much now, with the lift, and putting heavier taller tires on it, I've lost about 2-3 mpg all around. Not a lot of seat of the pants power loss pulling my trailer or otherwise.

I have not heard any good or bad about the TD in the 1500's. But with a 25-40 mpg epa city freeway rating. That's with the extra $1000-1500 cost on it!

Good luck on choice!

Marty


92 Navistar dump truck, 7.3L 7 sp, 4.33 gears with a Detroit no spin
2014 Chevy 1500 Dual cab 4x4
92 Red-e-haul 12K equipment trailer

KD4UPL

Swoope, VA

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Posted: 02/04/22 05:13pm Link  |  Quote  |  Print  |  Notify Moderator

Ordering a truck is crazy right now. I just ordered a new work truck yesterday; a 2022 GMC 3500 cab & chassis. The dealer had 4 allocations for Chevys but they couldn't be work trucks. He had one allocation for a GMC and it could be a work truck and so, my new one will be a GMC.
Further, he said my order was going in ahead of 5 other customers who had wanted certain options that weren't available. He showed me the list. one of the not available features was the 6.6L gas engine. I had been debating on getting the gas but decided to go with the diesel. "So, if I had wanted the gas it wouldn't have been ordered?" I asked him. "That's right." he said. "They won't take any orders for gas engines right now."

What a weird way to have to run a business.

LITEPHIL

AZ

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Posted: 02/05/22 09:04am Link  |  Quote  |  Print  |  Notify Moderator

KD4UPL wrote:

Ordering a truck is crazy right now. I just ordered a new work truck yesterday; a 2022 GMC 3500 cab & chassis. The dealer had 4 allocations for Chevys but they couldn't be work trucks. He had one allocation for a GMC and it could be a work truck and so, my new one will be a GMC.
Further, he said my order was going in ahead of 5 other customers who had wanted certain options that weren't available. He showed me the list. one of the not available features was the 6.6L gas engine. I had been debating on getting the gas but decided to go with the diesel. "So, if I had wanted the gas it wouldn't have been ordered?" I asked him. "That's right." he said. "They won't take any orders for gas engines right now."

What a weird way to have to run a business.

My dealer didn't express any problems ordering a 3.0 diesel but it wouldn't let him build a truck with the 5.3.


2022 Chevy Silverado RST Duramax NHT
1954 Chevy 3100 Carryall 4x4
2008 Salem T23FBL
04 FXDL Harley

ksss

Eastern Idaho

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Posted: 02/05/22 11:22am Link  |  Quote  |  Print  |  Notify Moderator

My brother just got his '22 GMC 3500 Denali with the 6.6 gas last week. It was ordered in July. Personally, I would have waited for the 10 speed and the new interior, but sometimes things don't work out like you would like sometimes. I am anxious to hear what he thinks of it. He is the only person I know that has one.


2020 Chevy 3500 CC 4X4 DRW D/A
2013 Fuzion 342
2011 RZR Desert Tan
2012 Sea Doo GTX 155
2018 Chevy 3500HD CC LB SRW 4X4 D/A
2015 Chevy Camaro ZL1

LITEPHIL

AZ

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Posted: 02/05/22 01:27pm Link  |  Quote  |  Print  |  Notify Moderator

ksss wrote:

My brother just got his '22 GMC 3500 Denali with the 6.6 gas last week. It was ordered in July. Personally, I would have waited for the 10 speed and the new interior, but sometimes things don't work out like you would like sometimes. I am anxious to hear what he thinks of it. He is the only person I know that has one.

So far there has been no indication that GM will be putting the 10 speed up to the 6.6 gas anytime soon. Makes no sense

ksss

Eastern Idaho

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Posted: 02/05/22 02:47pm Link  |  Quote  |  Print  |  Notify Moderator

I thought I had heard that they were going to the 10 speed in 2023? Maybe I was just WANTING to hear that.

APT

SE Michigan

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Posted: 02/05/22 03:17pm Link  |  Quote  |  Print  |  Notify Moderator

How many miles per year overall do you expect? Here are my recommendations:

Less than 8k per year -> 2500 6.6L gas
8>15k per year -> 1500 5.3 or 6.2L
>15k per year -> 1500 baby D-max

* This post was edited 02/12/22 08:57pm by APT *


A & A parents of DD 2005, DS1 2007, DS2 2009
2011 Suburban 2500 6.0L 3.73 pulling 2011 Heartland North Trail 28BRS
2017 Subaru Outback 3.6R
2020 Chevrolet Bolt

JCK

Ohio

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Posted: 02/05/22 06:08pm Link  |  Quote  |  Print  |  Notify Moderator

Iv had a 2015 GMC 1500 6.2 eight speed with NHT package pulling a Keystone Bullet 30 ft. At around 6500 lbs. using a Equilizer 4 point hitch. Nice truck hated pulling trailer with it. Lots of power and plenty of payload. Trailer did not sway but could never drive without 2 hands on the steering wheel and would porpoise a little on bridges . Part of the problem was with that package came 2O inch wheels that are P rated with short sidewalls.
I currently have a Grand Design 30 foot TT weighs 7000 lbs and a GMC 2500 Duramax same hitch. Absolutely love this truck see signature.
Have towed over 20,000 miles with this setup. Rain wind mountains doesn’t matter. Been from Ohio to the Rockies 3 times and would not change a thing. 36 gallon tank gets me a range of 400 to 450 miles before I needed to fuel up. Most times I would just fuel up when stoping for the night. With the 6.2 gas1500 small tank it was every 200 miles hated that.
I would not change a thing !!
Jeff


2019 GMC Denali 2500 Duramax
2018 Grand Design Imagine 2500 RL

Sjm9911

New Jersey

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Posted: 02/05/22 08:26pm Link  |  Quote  |  Print  |  Notify Moderator

Ill agree ,had similar experience with my 1500, and stopping for gas with it was really a trip killer. Thats why I asked how far do you tow . It matters.


2012 kz spree 220 ks
2020 Silverado 2500
Equalizer ( because i have it)
Formerly a pup owner.

LITEPHIL

AZ

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Posted: 02/06/22 06:16am Link  |  Quote  |  Print  |  Notify Moderator

Sjm9911 wrote:

Ill agree ,had similar experience with my 1500, and stopping for gas with it was really a trip killer. Thats why I asked how far do you tow . It matters.


Every trip is different and a couple hundred miles between fill ups isn't all that bad but I'm leaning towards the 3.0 Duramax now and that should extend things a bit I hope.

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