5.7k ram w/ 6 speed.

[jcash414]

Do they make external trans coolers for these? Will be pulling a cherokee on a car trailer a couple hours each way.

Thank you

 

[62Blazer]

Just to be clear, the truck has a factory transmission cooler. If you put another one on it would be for auxilliary cooling. Are you sure it really needs extra cooling?
I don't know why you couldn't put on a universal cooler. Haven't researched this vehicle specifically, but many years ago all of the aftermarket coolers were universal fit.

 

[DILLIGAF]

Your better of getting a custom tune with that POS 6 speed and throw in either R.L or Amsoil trans fluid.

 

[jcash414]

Just to be clear, the truck has a factory transmission cooler. If you put another one on it would be for auxilliary cooling. Are you sure it really needs extra cooling?
I don't know why you couldn't put on a universal cooler. Haven't researched this vehicle specifically, but many years ago all of the aftermarket coolers were universal fit.

I'm not sure I need it no... but the trans runs at 175 unloaded so I figure pulling a jeep on a trailer will get it up there.

 

[62Blazer]

I'm not sure I need it no... but the trans runs at 175 unloaded so I figure pulling a jeep on a trailer will get it up there.

Well, not necessarily. Not exactly how those systems work. Not much different than saying that your engine runs at 205 while driving empty so it will get a lot hotter towing a load....

 

[jcash414]

Your better of getting a custom tune with that POS 6 speed and throw in either R.L or Amsoil trans fluid.

it has new RL fluid in it. just put it in 2 weeks ago.

 

[jcash414]

Well, not necessarily. Not exactly how those systems work. Not much different than saying that your engine runs at 205 while driving empty so it will get a lot hotter towing a load....

well i know that. but i just feel like it will get hot. its the express package with the high gears. not ideal for towing

 

[crash68]

I'm not sure I need it no... but the trans runs at 175 unloaded so I figure pulling a jeep on a trailer will get it up there.

I believe there maybe a thermostat block that keeps the trans fluid warmer on these trucks. The make a bypass for the thermostat block that will keep the transmission cooler.
@Wild one knows which years have the thermostat block on the 66RFE

 

[Wild one]

I believe there maybe a thermostat block that keeps the trans fluid warmer on these trucks. The make a bypass for the thermostat block that will keep the transmission cooler.
@Wild one knows which years have the thermostat block on the 66RFE

Burla knows more about the RFE thermostat bypass then i do,i know they do make one for the RFE though.

 

[jcash414]

Burla knows more about the RFE thermostat bypass then i do,i know they do make one for the RFE though.

so who would i talk to about getting a bypass?

 

[crash68]

so who would i talk to about getting a bypass?

Let's see if @Burla chimes in.
I believe the 66RFE and 68RFE can use the same bypass block. I'm sure a few more people will chime in.

FYI: the 66RFE is behind the gas motors, the 68RFE is behind the Cummins diesel, but they're both from the similar RFE family of transmissions.

 

[Burla]

Do they make external trans coolers for these? Will be pulling a cherokee on a car trailer a couple hours each way.

Thank you

Contrary to popular belief, I'm not sure where it is located on the 5.7, both the 5.7 and 6.4 have them, and yes if you do get it off asap. I'll punt to @Hemi395 , he knows for sure. Even if you are in cold plac e where you can argue in favor of them, eventually the clog and there goes the transmission. I do believe in this case they are all the same, diesel, 6.4 or 5.7. Look up rfe thermal bypass block threads, tons of info there as far as which ones are great, this is what one looks like they are plug and play.

Look under the truck or in front for something that looks like this... So you pop off the old one and pop on the new one, jeff afulmotion-spelling- I believe has a dyi thread in it, you may lose a couple drips with the change. This stops the pumping of temp into the fluid and ends the worry about the pending fail when they clog, worry free after this is on.

 

[Burla]

here is jeffs video... so if you see that valve or find that valve, it is this simple. Not sure but I think corey will tell you this is in a different location, up in the engine bay around your cooler. I would have done this but in 2010 we didnt get this garbage. This was the 6.4 location.

ATS 66RFE/68RFE Thermo Bypass Block Install

2018 Ram 2500 6.4 Hemi w/ 66 RFE ATS Transmission Thermo Bypass Install. Huge change in temps, about a 50* decrease. You will need 1” wrench, 1” crows foot, ...

youtu.be

 

[jcash414]

here is jeffs video... so if you see that valve or find that valve, it is this simple. Not sure but I think corey will tell you this is in a different location, up in the engine bay around your cooler. I would have done this but in 2010 we didnt get this garbage. This was the 6.4 location.

ATS 66RFE/68RFE Thermo Bypass Block Install

2018 Ram 2500 6.4 Hemi w/ 66 RFE ATS Transmission Thermo Bypass Install. Huge change in temps, about a 50* decrease. You will need 1” wrench, 1” crows foot, ...

youtu.be

Awsome! Where do you get this bypass? Where do I buy

 

[Burla]

There is a link in that post amazon, first locate it so you know you have one.

WE dont know your truck, if it is a 2500 my guess is 99% you have one, the 1500's seam to be a mystery as most of post 2014 came with 8 speed, we do know those classics are out there but not a lot known about them.

 

[Wild one]

so who would i talk to about getting a bypass?

Look through the pass side of your grill,in the upper corner if you see an aluminium block roughly a couple inches square,with 4 good sized hard lines running to it,you have the thermostat block.That's where it was on my old 13 with the RFE transmission.I bypassed it with transmission cooler line,but that was long before you could buy plug-n-play bypasses,now they are the way to go,instead of doing it the old school way i did it

 

[jcash414]

There is a link in that post amazon, first locate it so you know you have one.

WE dont know your truck, if it is a 2500 my guess is 99% you have one, the 1500's seam to be a mystery as most of post 2014 came with 8 speed, we do know those classics are out there but not a lot known about them.

Gotcha. Mine is a 17 6 speed. Canada truck

 

[jcash414]

Look through the pass side of your grill,in the upper corner if you see an aluminium block roughly a couple inches square,with 4 good sized hard lines running to it,you have the thermostat block.That's where it was on my old 13 with the RFE transmission.I bypassed it with transmission cooler line,but that was long before you could buy plug-n-play bypasses,now they are the way to go,instead of doing it the old school way i did it

Is this it?

 

[jcash414]

Bump

 

[Sherman Bird]

so who would i talk to about getting a bypass?

You can call TransStar and discuss with them and buy one!