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-   -   6.4 Hemi 2500 (https://www.pirate4x4.com/forum/tow-rigs-trailers/2622538-6-4-hemi-2500-a.html)

Harvester of Sorrow 02-23-2019 05:47 PM

Quote:

Originally Posted by Ben W (Post 44334208)
Look for an Ecoboost F150 with max tow package. Mine is rated for 11,200 towing.

You driving one of those now huh? Looking at all of the half ton's out there...I don't think I can really go wrong anyway. My burb only had 290hp new but 410ft/lbs of torque. All of these new motors seem to be at 383hp or more and 400ft/lbs.

Same if not more wheelbase and more gears in the tranny means it should be a smoother pull as well.

Lastly...with the 454 I get 7.5mpg towing and 9mpg around town...:mr-t:

Norm 02-24-2019 06:55 AM

Quote:

Originally Posted by Harvester of Sorrow (Post 44334226)
You driving one of those now huh? Looking at all of the half ton's out there...I don't think I can really go wrong anyway. My burb only had 290hp new but 410ft/lbs of torque. All of these new motors seem to be at 383hp or more and 400ft/lbs.

Same if not more wheelbase and more gears in the tranny means it should be a smoother pull as well.

Lastly...with the 454 I get 7.5mpg towing and 9mpg around town...:mr-t:

My wife has a 15 ram 5,7, speed, 3.21's . The max tow rating is 7k with 3.21's, 10k with 3.73's. My wife's truck gets good mpg (16/21), but not sure I would want to tow 7k with it. It rides great and is pretty quick. I had a 3500 with 5.7 and 4.10's, with 9k-10k toy hauler it was a 6mpg dog. 7k on flat's it would have been ok but not in the rockies. If you get he 1500 ram, I would get the 3.73's and plan on sway bars for a 7k trailer. The hemi likes to pull hills at 4k-5k rpm, takes a bit to get used to.

I just picked up a 18 ram 2500 diesel, winter driving with studs and in 4x4 50% I'm getting 14-15. Hoping for 12mpg with the trailer when the snow melts. But I'm mostly towing around NW MT.

rugby 02-24-2019 08:17 PM

Quote:

Originally Posted by Harvester of Sorrow (Post 44332512)
These are the numbers I was looking for. So no braking issues towing the 7K?

I need to buy a truck very soon to replace my 1999 454 burb. There are a lot of nice 1500 5.7l trucks out there for sale. I have been looking at the following 2012 - 2017's:

6.2l ford
6.4l hemi
5.7l hemi

My rig will mostly be a daily and tow 7k once a month. There will be some planned multi-state trips this year.

I should be but I dont use the trailer brakes with this set up and it did just fine. I have had a few dodges and like them the best.

I have had an f150 work truck and I absolutely hated it.

dickwart 02-27-2019 07:15 AM

Quote:

Originally Posted by Harvester of Sorrow (Post 44333690)
So 5.7l Hemi huh...? I would be towing over to Naches, etc.

Yup 5.7. Been up over Snoqualmie over to Crashes to run Reiter and back over Stevens, and been down central OR with it a bunch so up out of Biggs and couple other nasty steep hills coming back...

D45 03-03-2019 08:50 AM

What trans is bolted up to these 6.4L trucks?

6.4L is only a power wagon and a 2500/3500 motor right?

D45 03-03-2019 09:13 AM

Quote:

Originally Posted by ramv (Post 43134578)
You can turn off the MDS. Simply select "6" with the +/- shifters. This also shows the gear you are in. I always drive like this as the MDS was annoying. It doesn't hurt/impact anything else except the variable displacement from engaging...

You sure about this? Tried to tell my buddy about this and he said it did not work

He is averaging 7.8-8.5 in his 6.4L PW , unloaded

Aggie06 03-03-2019 10:57 AM

Quote:

Originally Posted by D45 (Post 44344994)
You sure about this? Tried to tell my buddy about this and he said it did not work

He is averaging 7.8-8.5 in his 6.4L PW , unloaded



Stock, or larger tires? That seems pretty bad. Hell, thatís Chevy 6.0 range.

I will have to try turning off the MDS on my truck. Havenít ever messed with it.


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DirtRoads 03-03-2019 11:30 AM

Quote:

Originally Posted by D45 (Post 44344994)
You sure about this? Tried to tell my buddy about this and he said it did not work

He is averaging 7.8-8.5 in his 6.4L PW , unloaded

Works on my '16 PW. I'm running 37's and am getting like 10/14 unloaded indicated on the computer. Computer lines up with hand calculated =/- 0.5mpg. That's with a speedo that is uncorrected for tire size, so it's probably actually a little better. I don't drive it very hard.

My understanding is that there is no way to untraceably turn the MDS off permanently. So if you have a warranty, you are going to have to buy a second ECM to swap in when you take it in for anything. It's not like a GM MDS system where you can just get an OBD dongle to turn off the MDS, then remove the dongle to set everything back exactly how it was.

Quote:

Originally Posted by D45 (Post 44344966)
What trans is bolted up to these 6.4L trucks?

6.4L is only a power wagon and a 2500/3500 motor right?

I think you get the 68RFE. 6 speed auto that seems pretty good in the short time I've had it. I don't know if you can get an Aisin in a 3500/6.4 combo.

D45 03-03-2019 11:44 AM

Quote:

Originally Posted by Aggie06 (Post 44345108)
Quote:

Originally Posted by D45 (Post 44344994)
You sure about this? Tried to tell my buddy about this and he said it did not work

He is averaging 7.8-8.5 in his 6.4L PW , unloaded



Stock, or larger tires? That seems pretty bad. Hell, that’s Chevy 6.0 range.

I will have to try turning off the MDS on my truck. Haven’t ever messed with it.


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Stock 35s...... not sure on the gears

D45 03-03-2019 11:49 AM

Maybe the trans changed? Ii was thinking the 6-Speed automatic is the 66RFE

Aggie06 03-03-2019 12:23 PM

Quote:

Originally Posted by D45 (Post 44345162)
Maybe the trans changed? Ii was thinking the 6-Speed automatic is the 66RFE



Thatís correct.


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DirtRoads 03-03-2019 02:37 PM

Quote:

Originally Posted by D45 (Post 44345162)
Maybe the trans changed? Ii was thinking the 6-Speed automatic is the 66RFE

Whoops. I did some reading on them just now. Seems that they are similar but different :laughing:

Saluki ATO 03-04-2019 07:00 AM

Quote:

Originally Posted by DirtRoads (Post 44345144)
Works on my '16 PW. I'm running 37's and am getting like 10/14 unloaded indicated on the computer. Computer lines up with hand calculated =/- 0.5mpg. That's with a speedo that is uncorrected for tire size, so it's probably actually a little better. I don't drive it very hard.

My understanding is that there is no way to untraceably turn the MDS off permanently. So if you have a warranty, you are going to have to buy a second ECM to swap in when you take it in for anything. It's not like a GM MDS system where you can just get an OBD dongle to turn off the MDS, then remove the dongle to set everything back exactly how it was.



I think you get the 68RFE. 6 speed auto that seems pretty good in the short time I've had it. I don't know if you can get an Aisin in a 3500/6.4 combo.

16 PW on Toyo RTs 37x12.5 and corrected with AEV ProCal here. 11-12 unloaded here. Mostly city or going above southwest interstate speeds. 8-9 with either a single rig or small camper so far. Regearing to 5.13s in the near future now that I've got a little DD.

66RFE which is some combo of 65 and 68 architecture from other reading.

DirtRoads 03-04-2019 04:28 PM

Quote:

Originally Posted by Saluki ATO (Post 44345826)
16 PW on Toyo RTs 37x12.5 and corrected with AEV ProCal here. 11-12 unloaded here. Mostly city or going above southwest interstate speeds. 8-9 with either a single rig or small camper so far. Regearing to 5.13s in the near future now that I've got a little DD.

66RFE which is some combo of 65 and 68 architecture from other reading.

How do you like the AEV ProCal? It looks like I need one of those for my re-cal and a Range Technology disablement tool when (if) they come out.

Saluki ATO 03-05-2019 07:31 AM

Quote:

Originally Posted by DirtRoads (Post 44346606)
How do you like the AEV ProCal? It looks like I need one of those for my re-cal and a Range Technology disablement tool when (if) they come out.

It does what it's advertised to do. I tweaked the speedo a few times the first day and haven't touched it since. It's too bad the TPMS requires a dealer visit (or full scan tool) BCM reset.

I'm hearing that AlfaOBD is the way to go now though. More functionality than the ProCal which is just dipswitch uploads.

pcorssmit 03-05-2019 01:02 PM

I actually just reset my TMPS threshold on my 2015 a week or so ago with AlfaOBD. No more orange light on constantly, plus the EVIC display stays on wherever I left it now instead of going back to the tire pressure screen every time I start it. I haven't messed with the speedo yet, but it sounds pretty easy to do.

Pete

DirtRoads 03-07-2019 09:33 AM

Quote:

Originally Posted by Saluki ATO (Post 44347338)
I'm hearing that AlfaOBD is the way to go now though. More functionality than the ProCal which is just dipswitch uploads.

Android only is a bit of a drag. Search led me to RamForum. There's actually some decent tech there and a good bit of traffic.

pcorssmit 03-07-2019 12:47 PM

I first looked at getting the windows version (since we didn't have any Android devices), but ended up getting a $50 Fire 7 tablet to run it. I haven't used it a lot, but so far so good. As a bonus, I can use it to stream music in the garage instead of having to use my phone.

Pete

D45 03-08-2019 06:46 AM

What year did the 6.4L first appear in the 2500/3500 trucks?

Aggie06 03-08-2019 08:07 AM

Quote:

Originally Posted by D45 (Post 44352536)
What year did the 6.4L first appear in the 2500/3500 trucks?



2014


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Norm 03-08-2019 10:36 AM

Quote:

Originally Posted by pcorssmit (Post 44347958)
I actually just reset my TMPS threshold on my 2015 a week or so ago with AlfaOBD. No more orange light on constantly, plus the EVIC display stays on wherever I left it now instead of going back to the tire pressure screen every time I start it. I haven't messed with the speedo yet, but it sounds pretty easy to do.

Pete

looking into that, the tire warning bullshit is annoying. I run my winter studs at 45psi unless I'm hauling.

Aggie06 03-08-2019 11:14 AM

Quote:

Originally Posted by Norm (Post 44352880)
looking into that, the tire warning bullshit is annoying. I run my winter studs at 45psi unless I'm hauling.



Apparently theyíve made it harder for 2018+ models. Iím sure someone will come up with a solution eventually. Going to keep watching it as I like running mine around 65 if not towing.


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silveranger93 03-09-2019 07:19 AM

Quote:

Originally Posted by Aggie06 (Post 44352936)
Apparently theyíve made it harder for 2018+ models. Iím sure someone will come up with a solution eventually. Going to keep watching it as I like running mine around 65 if not towing.


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You can still do it with alfaobd, you just need a bypass harness due to the security. Look at the thread on ram forum or Cummins forum, it's all there.

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Aggie06 03-09-2019 08:48 AM

Quote:

Originally Posted by silveranger93 (Post 44353882)
You can still do it with alfaobd, you just need a bypass harness due to the security. Look at the thread on ram forum or Cummins forum, it's all there.

Sent from my Pixel 2 using Tapatalk



Cool, thanks. Missed that when I was looking.


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D45 03-11-2019 06:53 AM

Quote:

Originally Posted by lunacy (Post 44006724)
5.7 is the only v8 available in the Ram 1500. I hear they are going to put the 6.4 in it, but that's rumors been going around for a few years.

You can get a 6.2L V8 in some F150 trucks and GMC/Chevy offers their 6.2L V8 in the Silverado/Sierra 1500s........but only one V8 is available in the Ram 1500?!

What's the power specs of the current 5.7L Hemi?


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