swap my 66RFE for a G56....cost?

[White six four]

Been following this thread for awhile. Would be awesome if someone could make this happen. I would definitely be interested in doing it to mine. Sadly I usually drive my work beater car with a 5 speed over the ram because no matter how much I drive them (automatics) I just don't like them at all.

 

[BlackGold6.4]

I was curious if you were still attempting this. Have not been on here or allpar much lately. But glad to see it seems you are still working

Hey DevilDog .. same..haven't been here as much mostly cause I retired from mining. I did give up on the idea for awhile but this fing 66RFE is still a curse My mechanic wants one more kick at it to try and make the all billit RFE work .. have my doubts.

 

[907powerwagon]

I did talk to Jerry at Tapped performance about the tuning aspect of this. The 6.4 manual combo was offered on trucks in canada and mexico so the factory operating system already exists. It should be as simple and taking the pcm, unlocking it, and then uploading the new factory tune. Im not going to add anything else to it for now, but he also assured me that when the time came, i could do regular tuning for power options. The 4th gen trucks have everything already set up for both automatics and manuals, compared to to the cummins guys swapping a 68rfe to a g56, the only differences should be the bell housing/ clutch setup and the flashing of the pcm. I will also have to use the 271 transfer case but that should be easy considering i already have the bw 47 manual transfer case. the template for the holes in the floor for both that and the shifter are already stamped. only thing i havent completely figured out is the driveshafts. for the 68rfe guys going to g56, they end up shortening the rear drive shaft and lengthening the front by 1.75 inches. but driveshafts are pretty easy to take to the shop and have done so ill probably try it out with mine first and adjust as neccesary.

 

[392DevilDog]

I did talk to Jesse at Tapped performance about the tuning aspect of this. The 6.4 manual combo was offered on trucks in canada and mexico so the factory operating system already exists. It should be as simple and taking the pcm, unlocking it, and then uploading the new factory tune. Im not going to add anything else to it for now, but he also assured me that when the time came, i could do regular tuning for power options. The 4th gen trucks have everything already set up for both automatics and manuals, compared to to the cummins guys swapping a 68rfe to a g56, the only differences should be the bell housing/ clutch setup and the flashing of the pcm. I will also have to use the 271 transfer case but that should be easy considering i already have the bw 47 manual transfer case. the template for the holes in the floor for both that and the shifter are already stamped. only thing i havent completely figured out is the driveshafts. for the 68rfe guys going to g56, they end up shortening the rear drive shaft and lengthening the front by 1.75 inches. but driveshafts are pretty easy to take to the shop and have done so ill probably try it out with mine first and adjust as neccesary.

Are you sure about that...the only thing I have ever seen was the 5.7 with the manual still sold in Mexico. I have never seen the 6.4 with a manual. I would love to see the verification on this.

I was trying to think of a CC option ..but do not ever remember reading that either.

Very interested.

 

[392DevilDog]

The 2021 Ram 4000 Is the Stick-Shift HD Truck We Don’t Get

If you can find a way to get one here from Mexico, then...

www.thedrive.com

 

[907powerwagon]

update again after talking to jerry and rick at tapped. Rick informed us that you actually only need to perform the unlock on the pcm (since mines a 2015) and then all you need is a tuner from say HP or diablo and you can literally go in there and disable the automatic transmission setting and thats it... sounds too easy but apparently thats all it takes. Thats what they do when they swap their other platforms like magnums and challengers.

 

[907powerwagon]

Are you sure about that...the only thing I have ever seen was the 5.7 with the manual still sold in Mexico. I have never seen the 6.4 with a manual. I would love to see the verification on this.

I was trying to think of a CC option ..but do not ever remember reading that either.

Very interested.

Im not 100% on any of this haha. Im just trying to get as much research done as possible before attempting it!

 

[392DevilDog]

I know what you mean...I have been researching this too and following along with any chatter on the web about it

@BlackGold6.4 was so close.

I have a 99 with the 8.0l V10 and NV4500 HD. It is such an awesome combination...but if I could get a 6 speed...or even the same 5 spd as the 99 would make this 6.4 the beast it is

 

[White six four]

update again after talking to jerry and rick at tapped. Rick informed us that you actually only need to perform the unlock on the pcm (since mines a 2015) and then all you need is a tuner from say HP or diablo and you can literally go in there and disable the automatic transmission setting and thats it... sounds too easy but apparently thats all it takes. Thats what they do when they swap their other platforms like magnums and challengers.

That does sound too easy.

When do you plan on doing the swap?

 

[907powerwagon]

That does sound too easy.

When do you plan on doing the swap?

Still putting together ideas right now but I imagine I will start the process after the holidays. I have my daily to drive so it’s not a big rush for me. I’m still debating getting the diesel version g56 with having to change the bell housing and custom clutch setup vs just getting the g56 that was mated to the 5.7 hemi in the third gen rams. Internals are all the same, only thing that would be better in the diesel version is the larger input shaft. Realistically, I’m never gonna put more than 600hp in this thing or tow more than 10k pounds so I’m wondering if the stock hemi g56 (which is rated to the same spec) will be just fine for me.