2018 Cummins to 2019 6.4 hemi - Dodge Cummins Diesel Forum
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post #1 of 118 (permalink) Old 12-05-2019, 09:05 PM Thread Starter
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2018 Cummins to 2019 6.4 hemi

Title says it all. Things are changing financially and I'm looking to save a considerable amount of money going to a gasser. Just a little nervous about towing. I tow a 44' toy hauler 16k +/- loaded. See attached picture. 6.4 I'm looking at is a 2019 tradesman CCLB 4x4 with 4.10 axle. I live in Vegas and typically travel 150-300 miles towing. I already know diesel is bigger, better, stronger, etc. Just looking for some confidence that the 6.4 can do it safely.

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2018 3500 Big horn Mega 4x4, 37" Nitto Trail Grapplers, 18" XD Hoss 2, 30 gal transfer flow tank/tool-box.
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post #2 of 118 (permalink) Old 12-05-2019, 09:21 PM
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You will be fine, I towed our Montana with my 16 6.4 and it did a great job. Iím sure the new 8 speed will do much better then the 6 speed. Just be prepared to stop frequently for gas.
Donít baby the 6.4 it loves loves the rpms

https://www.cumminsforum.com/forum/a...1&d=1575595140
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post #3 of 118 (permalink) Old 12-05-2019, 09:37 PM
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Saving money? What about a older used one then
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post #4 of 118 (permalink) Old 12-05-2019, 10:57 PM
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I'm betting that toyhauler is well over 16k lbs loaded. A gasser will be working a lot harder than a diesel. You will definitely feel a big difference.
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post #5 of 118 (permalink) Old 12-05-2019, 11:09 PM
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please update this post if / when you finally tow with the hemi, and you get a good comparison.
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post #6 of 118 (permalink) Old 12-05-2019, 11:35 PM Thread Starter
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Quote:
Originally Posted by RamHunter18 View Post
Saving money? What about a older used one then
Quote:
Originally Posted by BmpyTrk View Post
I'm betting that toyhauler is well over 16k lbs loaded. A gasser will be working a lot harder than a diesel. You will definitely feel a big difference.
Used cant pull the negative equity and I'm partial to new.

As far as weight, you might be right. I want to get it weighed next time I have it loaded up. I believe its 12000lbs empty. I have 2 x YXZ 1000s that weight 1600 each. + food, water, supplies, myself in the truck with wife and 2 kids.

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post #7 of 118 (permalink) Old 12-05-2019, 11:38 PM Thread Starter
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please update this post if / when you finally tow with the hemi, and you get a good comparison.
If I end up getting it I will do my best to put a TON of good information out there. I dont see many posts that have the 6.4 working to what Ram says they can do.
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post #8 of 118 (permalink) Old 12-05-2019, 11:38 PM
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Quote:
Originally Posted by Foster6565 View Post
Used cant pull the negative equity and I'm partial to new.

As far as weight, you might be right. I want to get it weighed next time I have it loaded up. I believe its 12000lbs empty. I have 2 x YXZ 1000s that weight 1600 each. + food, water, supplies, myself in the truck with wife and 2 kids.


If financial changes are your driving force then putting negative equity onto a new truck is a step in the wrong direction imo.
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post #9 of 118 (permalink) Old 12-05-2019, 11:50 PM
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Quote:
Originally Posted by BmpyTrk View Post
A gasser will be working a lot harder than a diesel. You will definitely feel a big difference.
Technically they would be working the same, if pulling the same amounts of weight at the same speeds. It takes a certain amount of energy to perform a given job, be it a gas or diesel that performs the job.

But yes, there will obviously be a difference on the hills, and in the rpms used.
For what it's worth, our 2500 diesel (with crappy gears) was replaced with a 4.10 geared 6.4 and it supposedly handles the hills around here just fine.
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Maybe if we start telling people that the brain is an app, they will start using it?

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post #10 of 118 (permalink) Old 12-06-2019, 12:06 AM
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Sure
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post #11 of 118 (permalink) Old 12-06-2019, 12:29 AM
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There are hidden/built in expenses in trading one vehicle for another. Right now you have an unrealized first year depreciation loss putting you underwater. The trade you contemplate makes that a realized loss, and then you immediately have another on the new truck. I doubt you'll pull much money out of the trade - and the reduced monthly payments you likely expect are an illusion produced by decreasing the amount of your payment going to equity and more going to interest. Put another way you're eating 2 first year's depreciation cost in order to lower your payments. I think you better recheck those "saving considerable amount of money" calculations. You're likely digging a deeper hole for yourself.

I expect the 6.4 will, in a drive-ability sense, get you there and back satisfactorily. I also, expect,if it's hilly country you'll not like the MPG or high revs your running on the uphill grades.

So, here's another approach to think about. Look at all your expenses, and see where you might cut back; dinners out, cable TV/entertainment, etc are good places to look. Secondly look at your debts. If there is one that can be paid off fairly quickly, get that done as soon as possible to eliminate that monthly payment. Then start putting at least a significant part of that payment toward your highest interest loan. Likely the monthly payments on that loan are based on the outstanding balance, so you could over time reduce the amount of the payment. However, I[d encourage, working hard to get that one paid off too.
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post #12 of 118 (permalink) Old 12-06-2019, 12:53 AM
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If there is anyway to keep your 18 Cummins I would sure try to go that route.
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