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Open Roads Forum  >  Tow Vehicles

 > 6.4l 8 speed towing review

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hvac

Michigan

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Posted: 08/20/19 08:19pm Link  |  Quote  |  Print  |  Notify Moderator

Grit dog wrote:

^ In particular, haven't peeked under the hood or behind the grille of a new Ram 6.4.
But, of the multitude of gas pickups I've had in recent years, all used for work (towing and hauling), none of them have needed any sort of cooling enhancements. I'm certain that is standard across the board now and has been for quite a while....if a vehicle is rated to tow xxxx lbs, it has the equipment to do it.


Don't even have to think about it, unless a eco diesel. But, 3k rpm and under rule works..

Grit dog

Black Diamond, WA

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Posted: 08/21/19 11:05am Link  |  Quote  |  Print  |  Notify Moderator

^ I don’t understand that rule.


03 Arctic Fox 860
07 Dodge 2500 deezul
"Obviously I don't want to overload my truck and be unsafe, but the reality is the truck is way more capable than the 10K GVWR they put on the sticker.
KJ"

ib516

Canada - soon to be Costa Rica

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Posted: 08/21/19 12:33pm Link  |  Quote  |  Print  |  Notify Moderator

cliffy49 wrote:

I was looking at the 2019 6.4 with the 8 speed today. Almost pulled the trigger but wanted to research a little more. MY question to you guys is, does this truck come with the tranny and engine oil coolers. I have looked all over the web, dealer sites and Ram site and have not been able to find this information. I can not find it even as an option.

Salesman I spoke with today said that since the truck as configured is rated to tow 16k it did not need these two items. Since his mouth was moving, I am not real sure about that comment. I just want to be sure as I don't want to make a 45k+ mistake. Thanks in advance for all your help

When I towed 12K with mine (a 37' 5er) in the Canadian Rockies, I watched the engine coolant, engine oil, and trans temps. That's with the AC on and 5 people and a dog in the cab. Not once even came close to getting too hot. The cooling is very robust on the 6.4L.


Prev: 2010 Cougar 322QBS (junk)
02 Dodge 2500 4x4 5.9L CTD 3.55
07 Dodge 3500 4x4 SRW Mega 5.9L CTD 3.73
14 Ram 2500 4x4 Crew 6.4L Hemi 4.10
06 Chevy 1500 4x4 E-Cab 3.73 5.3L
All above are sold
Current: 07 Dodge 1500 5.7L Hemi 3.55 / 2010 Jayco 17z


Bionic Man

Colorado

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Posted: 08/21/19 01:18pm Link  |  Quote  |  Print  |  Notify Moderator

hvac wrote:

From my side its reviews from owners that are towing at altitude and poor gear spacing. Possibly your 4.10 is the solution. Google ike gauntlet and the ram 6.4l vs the ancient 6.0 Chevy. It did poorly.


I always get a kick out of the amount of reviews that say to buy or not buy something based on how it performed in the “Ike Gauntlet “. Because really who cares how it does there? That is a pass very few people on this forum ever drive. And even if you do, it’s a 10 minute segment in your journey. As long as the vehicle gets up the pass, who cares how fast it makes it? I pull over that section maybe a dozen times per year, and as long as the vehicle can make it over the hill, it doesn’t matter to me if it does it in 8 minutes or 18. It is insignificant in the whole journey, and especially true for 99% of the population who will never drive it.


2012 RAM 3500 Laramie Longhorn DRW CC 4x4 Max Tow, Cummins HO, 60 gallon RDS aux fuel tank, Reese 18k Elite hitch
2003 Dodge Ram 3500 QC SB 4x4 Cummins HO NV5600 with Smarty JR, Jacobs EB (sold)
2002 Gulf Stream Sea Hawk 29FRB with Honda EV6010

VernDiesel

Dayton OH

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Posted: 08/21/19 07:59pm Link  |  Quote  |  Print  |  Notify Moderator

Good read on the 68RFE. The versions of the 8 speed that come in the 1500 5.7 & Ecodiesel and I’m assuming the 6.4 is rated to 520 TQ. FWIW I do have an engine & transmission tune in my ED. About 465 TQ as conversion to how Ram would rate it. Truck is used to tow TTs & boats daily and especially across the west.

This transmission has been great up & downshifting, quick crisp shifts, no hunting, pulling grades plus it’s held up 592k now. No repairs 5 fluid changes 3 filter changes. Truck has towed to almost 16k CVW over 6 percent grades. I think it will prove a game changer for the 6.4 2500. That’s not to say that the 68RFE doesn’t work just fine in the flats and with moderate weight especially if it’s not pushed hard.


Transportr TT & boats RAM EconoDiesel Factory TBC, Tow mirrors, Hitch camera, Axle to frame air bags, Tune w turbo brake, Max tow 9,200 CGAR 7,800 CVWR 15,950 axle weights 3,340 steer 2,260 drive Truck pushed head gasket at 371k has original trans at 500k

Grit dog

Black Diamond, WA

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Posted: 08/21/19 10:10pm Link  |  Quote  |  Print  |  Notify Moderator

That’s phenomenal service life out of the trans!
10,000hours dang...

ib516

Canada - soon to be Costa Rica

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Posted: 08/22/19 09:12am Link  |  Quote  |  Print  |  Notify Moderator

Bionic Man wrote:

hvac wrote:

From my side its reviews from owners that are towing at altitude and poor gear spacing. Possibly your 4.10 is the solution. Google ike gauntlet and the ram 6.4l vs the ancient 6.0 Chevy. It did poorly.


I always get a kick out of the amount of reviews that say to buy or not buy something based on how it performed in the “Ike Gauntlet “. Because really who cares how it does there? That is a pass very few people on this forum ever drive. And even if you do, it’s a 10 minute segment in your journey. As long as the vehicle gets up the pass, who cares how fast it makes it? I pull over that section maybe a dozen times per year, and as long as the vehicle can make it over the hill, it doesn’t matter to me if it does it in 8 minutes or 18. It is insignificant in the whole journey, and especially true for 99% of the population who will never drive it.

Well said. Nobody seems to remember than on any other grade (like the Davis Dam) the Ram 6.4L Hemi left the others in the dust. One that one grade in the whole of North America, something in the ECM kicks in to limit performance for some reason known only to the engineers at Ram. I never experienced that in my use of the 6.4L Hemi anywhere in the Canadian Rockies I towed.

Grit dog

Black Diamond, WA

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Posted: 08/22/19 09:52am Link  |  Quote  |  Print  |  Notify Moderator

While I think the tfl videos are pretty silly, the Ike is a good benchmark kind of test that is easily accessible and consistently repeatable. (IE don’t get stuck doing 20mph up some grade 1/2 the time and have to make repeated attempts at a “best” run.)
Does everyone drive I70 in CO? Nope, but there’s a 99% chance your rig, apples to apples will perform as well or better in the vast majority of conditions as it does pulling that grade.
If a person is not interested in performance and only getting from point a to point b, then it probably doesn’t matter to that person.
Doesn’t dispute the validity of the test though.

VernDiesel

Dayton OH

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Posted: 08/22/19 01:29pm Link  |  Quote  |  Print  |  Notify Moderator

Grit dog you made me look and calculate it out. Right at 11,000 hours.

hvac

Michigan

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Posted: 08/23/19 11:21am Link  |  Quote  |  Print  |  Notify Moderator

The ike is interesting though. We do all The major passes throughout fall through spring. It to me speaks to a criteria on how I will enjoy the truck. Just sayin. I always like the comment of low drama. The eco diesel got that.

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