2500 6.4 or 6.7?

[tsunamilogan05]

So in a couple months I'm looking to upgrade. We bought a fifth wheel and looking to travel around and live in it for a year.

So selling the 1500.

I've read both on towing capacity and hauling capacity.

Surprisingly if I recall the 6.4 hemi hauls more than the 6.7 diesel and the 6.7 tows about 2k more pounds.

So majority vote or opinions would help.

My buddy says get a 6.4 because it'll be cheaper on maintenance.

Thanks all!


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[Rustproofcorn]

I love this question. I love my Cummins. So that's what I vote for. If I personally get a gasser it will be in a half ton.


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[dexter]

You are looking at the wrong numbers - the key number it the total vehicle weight.

That is the weight of the truck plus the hitch or pin weight (for a 5th wheel) and everything else in the truck. Use this calculator.

RV Tow Check | Towing Capacity Calculator

 

[theviking]

This conversation topic never ends well. How heavy is your trailer fully loaded for travel? Are you going to be traveling through a lot of mountains, higher elevations? Basically, below 10k it doesn't much matter what you get. Above that, the decision gets a bit more involved. You also need to factor in your estimated GVWR when towing. The 6.4 payload capacity is only higher because the engine weighs less. Don't forget to factor in the pin weight. Regardless of the engine option, government regulations restrict GVWR ratings for all 3/4 ton trucks, so you might have to step up to a 3500.

With 4.10's the 6.4 is rated up to about 16k, I don't hear many (any) people pulling that much with a gas engine. For the fuel economy alone if no other reason.
If you do get a 6.4, definitely order one with the 4.10's.

 

[14hemiexpress]

Fifth wheels tend to have a high hitch weight and tend to push alot of wind. That being said if you plan on dragging it around alot especially through the mountains I suggest the 6.7l but in a 3500 to compensate for the high hitch weight and you can get away with a srw unless it's a really big one. If you don't plan of dragging it around all the time And plan on staying in one place for a while and don't plan on being in mountains much a 2500 6.4l with 4.10 should suffice it will be about 6000 cheeper, no def and a better ride with the coils. A 2500 6.4l will have a 3-3000lb payload vs a 2500 6.7 only having 2-2300 payload witch is why I would suggest a 3500 If you go Cummins.

 

[CLOUDL1GHT]

I love this question. I love my Cummings. So that's what I vote for. If I personally get a gasser it will be in a half ton.


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Cummins*

I hope you're not *******

 

[tjfdesmo]

I own a 6.4, and it suits my needs just fine, BUT if I were in your shoes looking at pulling a fiver on a somewhat full-time basis, I would opt for the Cummins. The difference in outright pulling power is undeniable, plus you get the e-brake.

 

[U&A]

I own a 6.4, and it suits my needs just fine, BUT if I were in your shoes looking at pulling a fiver on a somewhat full-time basis, I would opt for the Cummins. The difference in outright pulling power is undeniable, plus you get the e-brake.

most likely this is what id do too. unless I stayed around the 10,000-12,000 mark. than id be comfortable with the 6.4

 

[Mopar_Magic_Man]

If you think you will be pulling alot I don't know that you can beat the cummins but if your not pulling all the time and use it as a DD the 6.4 might be the way to go. I love my 6.4L but I'm not hooked to a trailer every single day. I couldn't justify the cost difference over the 6.4L for what I do. With the prices of trucks now being cut 9k around here I would have to think on it though.

 

[dexter]

If I were to get a 5th wheel, it would be this one.
ORV | Glacier Peak F26RKS

Figure pin weight is 20% of max or 2,600 lbs. Then you have to add in everything else you put in the truck like the in bed hitch and people.

I'd go with the 6.4L. My truck came prepped with for a 5th wheel - holes cut in the bed, hitch mounting plates, electric hook up in bed,

https://www.youtube.com/watch?v=-K2VjnlZOsQ



SPECIFICATIONS
Full Feature Dry Weight - Lbs. 8900
Fresh Water Capacity (approx. gal) 80
Tire Size ST235/80R/16
Load Range E
Exterior Length (approx. hitch to back of ladder) 30'6"
LPG Capacity (approx. pounds) 60
Grey Water Tank (approx. gallons) 40/40
Black Water Tank (approx. gallons) 50
Dry Hitch Weight (approx. Lbs.) 1550
Net Carrying Capacity 4095
Maximum Trailer Weight - Lbs. 12995

 

[freefallin]

3500 Cummins with the Aisin transmission would be my vote. The 68rfe in my 2500 was the one thing I disliked about that truck. Head to the cumminsforum, if you haven't already.

 

[Ram444]

If you want to pull the camper with ease but have plenty of money for the additional maintenance go with the Cummins. The gas engine will get it done but will work a little harder albeit cheaper to maintain. I've had a 500+ HP Tundra that could easily pull the camper through the mountains but that was with the supercharger. I pulled them with the plain gas motors and got the job done but at the expense of using higher rpm to keep the truck moving at speed through the mountains. The diesel will pull the load effortlessly through the mountains. If your staying on flatland get the gasser; if you plan on trips through the mountains get the diesel!

 

[Hootbro]

I am a 6.4 guy but if I was using it the way you plan to, I would be in the 6.7 Cummins.

 

[tsunamilogan05]

Thanks guys. Some more details. I'll be buying the truck cash with a budget of$36k. The camper we purchased has a gcwv of 10,320 it says. So I'll probably be buying used unless I find a killer deal and maybe sweet talking the wife to$40k fingers crossed.


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[Iron Outlaw]

Thanks guys. Some more details. I'll be buying the truck cash with a budget of$36k. The camper we purchased has a gcwv of 10,320 it says. So I'll probably be buying used unless I find a killer deal and maybe sweet talking the wife to$40k fingers crossed.


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Good luck. If you are pulling through the mountains with 10000+ pounds and the wind resistance of a 5th wheel, I'd go cummins. I love my 6.4 for work and daily driving, and it is a great towing machine, but im in georgia in relatively flat land. You can't deny 800+ torque at 1800 rpms.

For $35000 I couldn't find a diesel with under 65,000 miles. No more warranty...new I could not get into a diesel 4x4 for under $45000, and that was Tradesman models. You are around what my limit was. I ended up with a new 6.4 gasser SLT for under $37000 put the door.

 

[Iron Outlaw]

Someone needs to invite the whole crew from the heavy duty section. Where's drittal, South texan, and Danno?

 

[dexter]

Thanks guys. Some more details. I'll be buying the truck cash with a budget of$36k. The camper we purchased has a gcwv of 10,320 it says. So I'll probably be buying used unless I find a killer deal and maybe sweet talking the wife to$40k fingers crossed.


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I got my truck for $38,500 + 1,500 for the trade in so - $40,000 then you have to add taxes.

 

[whiteboycustom]

Just made my first long distance trip last weekend, east Texas hills with cruise on 65 was no issue for the ctd....averaged 13mpg too

Tow/haul and the e-brake really helps reduce wear and tear on the brakes

With all that said, look at the pin weight then determine if you need a 2500 or 3500, I have a little bit of bucking so I'm adding air bags in the near future