2020 6.4 vs 6.7

I’m trying to decide between a 2020 2500 Powerwagon 6.4 or a 2020 Laramie 6.7. I live in the mountains of East TN, I won’t be pulling anything daily, occasionally pulling a tractor and 5th wheel. Mainly gonna use it for driving to work, looking for some thoughts on mpg and general daily use. Thanks,

you can drive a lot of miles for the difference in price if in fact you don't need the towing power. You have to remember tho that a PW has a lot less payload than non PW 2500's. they are a lot nicer riding tho.

You'll probably get a lot of Hemi bias on this forum.
How heavy is your fiver and tractor? If they're 10K plus gross that will be a definite yes check in the CTD column. For daily driving if the trips are on the short/shorter side that would be more for the Hemi. The CTD will do better in the fuel economy.
The 2500 PowerWagon actually has a reduced payload/towing capacity as compared to a regular 2500. I believe RAM offers a Tradesman "PowerWagon" that has the regular 2500 capacities but not some of the off-road friendly amenities as the normal PowerWagon.

The PW is not a good choice for a fifth wheel.

crash68 said:

You'll probably get a lot of Hemi bias on this forum.
How heavy is your fiver and tractor? If they're 10K plus gross that will be a definite yes check in the CTD column. For daily driving if the trips are on the short/shorter side that would be more for the Hemi. The CTD will do better in the fuel economy.
The 2500 PowerWagon actually has a reduced payload/towing capacity as compared to a regular 2500. I believe RAM offers a Tradesman "PowerWagon" that has the regular 2500 capacities but not some of the off-road friendly amenities as the normal PowerWagon.

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unfortunately the Tradesman with a PW package has the same limitations as the PW as far as payload and towing. It has all the offroad friendly stuff tho.

the white is a tradesman with pw package her is the door sticker.

2 completely different use cases with those trucks. PW is a great offroad vehicle but a poor choice for towing and daily driving (IMO after owning one). Cummins is a pulling work horse and not a great off road truck.

If you are serious about the diesel I suggest you go to a diesel forum and ask questions there as well, this is more a gas leaning forum so the answers will be skewed to that platform.



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the silver a PW not much difference.

Both are fabulous options and you’ll be pleased with either model. I presume you are wanting a loaded up model with all the creature comforts?

Personally, I went with a Tradesman 6.4 as it fits my needs perfectly.

mtnrider said:

2 completely different use cases with those trucks. PW is a great offroad vehicle but a poor choice for towing and daily driving (IMO after owning one). Cummins is a pulling work horse and not a great off road truck.

If you are serious about the diesel I suggest you go to a diesel forum and ask questions there as well, this is more a gas leaning forum so the answers will be skewed to that platform.



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We love our Power Wagon for DD. We have a 2016 crv touring and will take the pw over the honda most times.

retired said:

We love our Power Wagon for DD. We have a 2016 crv touring and will take the pw over the honda most times.

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That's why they call them opinions.... I couldn't stand stopping at the gas station practically every other day (as well as a few other things). If I could have kept it as a weekend warrior truck I would have, it was awesome off road.

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mtnrider said:

That's why they call them opinions.... I couldn't stand stopping at the gas station practically every other day (as well as a few other things). If I could have kept it as a weekend warrior truck I would have, it was awesome off road.

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I am lucky I don't have to daily drive 200 miles a day. Our DD consists of 20 maybe 30 miles or so a day. I agree if I had to fill up every other day it would get tiresome. What year was your PW? the 19 on up do seem to get a bit better mpg with the 8speed.

I occasionally drag a 6,800 camper with a 2500 Tradesman with the V8. I leaned more towards the level 1 Tradesman than the PW because I don't play in the mud anymore. Had I wanted a truck to play with instead of daily drive an work with I may have leaned more towards the Power Wagon.
In my opinion the Power Wagon is geared for people that off road for fun more than daily drive. Even though people with money to burn an have no clue how to drive off road buy em an that's why so many are on the road.

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As was said, the PW is an awesome truck, just not designed for towing or hauling. I was looking at buying one then saw the payload limits and decided on a regular 2500 with 6.4. In fact I saw a youtube video of a father/son that tested trucks. They tested a Ford and put 4 full 55 gallon drums in the bed. They could only put 3 in the Power Wagon and still be legal. Same goes with towing. Neither truck would be great for a 5th wheel but the Cummins would be better. Not just power wise but suspension and capacity wise. A larger 5th wheel won't be legal behind a 2500 Cummins either though. Typical payload on the 2500 Cummins is only about 2200lbs. A typical 5th wheel pin weight is about 2000lbs so you are already over payload with your hitch. A 3500 Cummins would be ideal.

As far as the 6.4, they are great engines. A regular 2500 6.4 would work too but I'd say 11,000lbs or so would be about it's limits if you want to tow far. Over about 11,000lbs I'd probably say go with the 3500 Cummins. I have towed 9500lbs with my 2500 (6.4 and 4.10's) and it towed great. Maybe 12,000 would be good too but I'm just guessing based off of my experience.

FWIW-typical payload on a Power Wagon is about 1500-1600lbs. Typical payload on 2500 Cummins is about 2100lbs. Typical 2500 6.4 payload is about 3100lbs. You will run out of payload on just about every truck before you max out towing capacity

You could always swap out for the regular 2500 rear coils or add airbags to a PW. This will help a bunch, but still may not be legal depending on weight. The truck will pull just fine though if you also upgrade to E rated tires as they come with D stock. Again this is all based on your trailer/tongue weights.

I wanted a diesel, but they can get real expensive when the warranty expires. It’s common for the fuel injection pump to fail. Ram upgraded the pump late in 2020 and made a change from the asymmetrical cam CP4.2 to a new symmetrical CP4.2, likely in a bid to solve some injection pump issues late in 2020. I suggest to do your homework and confirm the truck has the newer version of the pump. Lots of info out there on this subject.

“While supplying high-pressure fuel is an injection pump's job, the CP4 does so with a high probability of failing (typically around the 100,000-mile mark) and leaving owners with a need to overhaul their truck's entire fuel system, at a cost that can be anywhere between $8,000 and $10,000”

decisions decisions decisions....maybe a 6.4 3500 fits the bill as you can always add lockers...

I agree with those just above. PW is a toy, with looks to match. Bombing around the backcountry, mudding, etc.

2500 gas is good combo for towing up to 6-9k lbs (max around 12k). Anything above that needs 3500 and Cummins. Pretty simple in my view. Been running trucks for 30+ years. Even had the original Cummins way back when.

BillyGoat said:

You could always swap out for the regular 2500 rear coils or add airbags to a PW. This will help a bunch, but still may not be legal depending on weight. The truck will pull just fine though if you also upgrade to E rated tires as they come with D stock. Again this is all based on your trailer/tongue weights.

I wanted a diesel, but they can get real expensive when the warranty expires. It’s common for the fuel injection pump to fail. Ram upgraded the pump late in 2020 and made a change from the asymmetrical cam CP4.2 to a new symmetrical CP4.2, likely in a bid to solve some injection pump issues late in 2020. I suggest to do your homework and confirm the truck has the newer version of the pump. Lots of info out there on this subject.

“While supplying high-pressure fuel is an injection pump's job, the CP4 does so with a high probability of failing (typically around the 100,000-mile mark) and leaving owners with a need to overhaul their truck's entire fuel system, at a cost that can be anywhere between $8,000 and $10,000”

decisions decisions decisions....maybe a 6.4 3500 fits the bill as you can always add lockers...

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What is up with Bosch and that crappy fuel pump? I think Ford is using it too? Not sure what GM (Isuzu) is using.

HEMIMANN said:

What is up with Bosch and that crappy fuel pump? I think Ford is using it too? Not sure what GM (Isuzu) is using.

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They all use them and have the same problems. There is a lawsuit out there regarding the C4P. If I had the cummins with a C4P, I would buy the upgrade kit with the robust C3P. The manufacturers cheapened out as the 4 is cheaper....junk. When the pump fails, metal pieces get sucked up throughout the fuel system and all needs to be replaced $$$$$

BillyGoat said:

They all use them and have the same problems. There is a lawsuit out there regarding the C4P. If I had the cummins with a C4P, I would buy the upgrade kit with the robust C3P. The manufacturers cheapened out as the 4 is cheaper....junk. When the pump fails, metal pieces get sucked up throughout the fuel system and all needs to be replaced $$$$$

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Yeah, I read about it. I just don't get it, on an engine that expensive with piezo injectors. Did they outsource to China too, while they were at it?

Lol, who knows.....most likely. Not their problem once the warranty expires.