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Old 03-02-2019, 09:33 PM   #21
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The 321 has a towing capacity of about #8300. The 392 is about #11,000.

The one gives more opportunity for a bigger trailer but, likely 1 mpg every day driving less mileage. More engine noise cruising. Higher rpm.

Frankly though towing a #10,000 trailer with a half ton is iffy. The payload becomes an issue. 3/4 ton would be better.

Either works.

Tough choice.
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Old 03-02-2019, 09:42 PM   #22
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The 321 has a towing capacity of about #8300. The 392 is about #11,000.

The one gives more opportunity for a bigger trailer but, likely 1 mpg every day driving less mileage. More engine noise cruising. Higher rpm.

Frankly though towing a #10,000 trailer with a half ton is iffy. The payload becomes an issue. 3/4 ton would be better.

Either works.

Tough choice.
Thanks Tom... My current 2017 Chevy Colorado truck has 7600 lbs. capacity, but for a bigger trip I expect to be carrying a couple of heavy generators and more gear (bikes+) steeper grades out west. For that reason, I thought maybe an upgrade would be good. I would be concerned about the engine seemingly racing all the rest of the time though. I guess I need to find one of each type and test drive. Thanks for the advice.
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Old 03-02-2019, 10:47 PM   #23
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My personal choice would be the 3:92. I honestly don’t recall what my 2012 Ram had so I won’t use it but my 2014 Tundra with 4:30 rearend I my opinion towed better than the 2014 eco boost with 3:55 until I put the roush stage two kit on it . I feel like my current Ram 2018 Ram with 3:73 tows better than the 2016 F 350 with the 3:55 even though it has less horsepower and torque. I actually think getting better mileage more consistently with the Ram as well .
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Old 03-03-2019, 05:45 AM   #24
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…., but for a bigger trip I expect to be carrying a couple of heavy generators and more gear (bikes+) .
Make sure you open the doors of the trucks you are looking at to see what the payload is for every truck (sticker on the door jam). It will surprise you how little weight you can put in a half ton truck after hooking up a trailer and putting all the humans in it...


About the gear ratios. I had a 5.7 with 3.92's...I would not even look at a truck if it doesn't have the best available tow gears. The newer half tons with their 8/9/10 speeds further re-enforce that decision as the mpg penalty is very slight and only on the highway. Another thing that affectively changes the final drive ratio is the wheel size...taller rims/tires look cool but they remove mechanical advantage for towing.

Good luck searching for your new truck.
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Old 03-03-2019, 06:10 AM   #25
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Where do you do your towing?
I live in northeast Ohio and have towed to New England and Colorado. Towing out to Glacier this summer.
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Old 03-03-2019, 06:46 AM   #26
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Good advice from all. Really appreciate your experience.
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Old 03-03-2019, 08:08 AM   #27
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Being a 5.7 Id go with the 3:92 as will work better when traveling west and the additional equipment you will be carrying. Later RJD
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Old 03-03-2019, 03:40 PM   #28
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Presently, just in the southeast. However, the purpose of the upgrade would be so we could handle steeper grades if needed... Right now I tow it with my 2.8L Chevy Colorado Diesel and it does well, including NC and VA mountain areas which I know are modest compared to the Rockies.
I am not an expert by any stretch of reality but if it were up to me, I'd get the highest gear ratio available. Before we got the Chevy, our Tundra with 4:10s pulled 9000 lbs up to Big Bear just fine although the rpms got up there. The Chevy, also with 4:10s, got wound up on a trip from Palm Springs, CA to Sedona, AZ. I would not describe any of the hills as brutal.
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Old 03-07-2019, 01:54 PM   #29
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After having a 1500 with the 3.55 (pulling 5000lbs) which screamed like a rotten child going up hills when I didn't get a run and it downshifted, I've very pleased with my diesel and the 3.73 which purrs like a sleeping kitten on all but the biggest hills. How much of that is the diesels torque and how much is the 3.73 is unknown to me since I'm not comparing apples to apples. I do know I did not have the same issue in the one half ton I was smart enough to get the 3.73 in although it was a manual 5 speed. Still my favorite truck ever though this one likely will be once I get more time with it.
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