Thoughts on a regear with 37s?

[hbleconey]

anyone swapped out the gears on a 2019 PW yet?

 

[crazy jerry]

as for the 14+ front. for 4.88 and 5.13 the only option used to be a gm gearset which required longer bolts and a spacer because the ring gear was thinner obviously. im not sure how long its been availabe but there is another 4.88/5.13 option thats specific to 14+ rams, nitro makes this gearset and requires no spacer since its a thick gear for the ram carrier

i want to correct my own post as i know more today than i did back in february. thanks mainly to wyram for photos he provided me. all the gearsets intended for the front gm style 9.25 will be dimensiinally the same. that meens that any brand can be put in the electric cad pw with no spacer or special components, (to confirm just pop the front cover and verify youve already got the ring spacer). reason being is because the spacer is already installed with the pw factory 4.10 gearset. for reasons im not sure of, ram/aam makes two 4.10 gearsets. one for non pw and one for pw. the pw is thin gear with spacer and i believe the non pw is thick gear with no spacer (although i havent seen one first hand but im betting the farm on my assumption). this im quit sure is were all the spacer confusion originated.

 

[trdt44]

anyone swapped out the gears on a 2019 PW yet?

I am close to getting mine done. I have done a ton of research and for the most part everything is the same as previous years.

 

[trdt44]

i want to correct my own post as i know more today than i did back in february. thanks mainly to wyram for photos he provided me. all the gearsets intended for the front gm style 9.25 will be dimensiinally the same. that meens that any brand can be put in the electric cad pw with no spacer or special components, (to confirm just pop the front cover and verify youve already got the ring spacer). reason being is because the spacer is already installed with the pw factory 4.10 gearset. for reasons im not sure of, ram/aam makes two 4.10 gearsets. one for non pw and one for pw. the pw is thin gear with spacer and i believe the non pw is thick gear with no spacer (although i havent seen one first hand but im betting the farm on my assumption). this im quit sure is were all the spacer confusion originated.

I have actually been wondering if the gears are the same but the carriers are different. Aftermarket lockers, including ARB, require the use of the ring gear spacer in the regular Ram AAM 9.25" front axle. I have been thinking that these lockers were originally made for the GM 9.25".

I was just looking at some pictures of the Trac Rite locker and it almost looks like it has a spacer but is actually attached to the locker. In your research is there a spacer on top of what these pictures show? Here is a link to CM gearworks which has some pictures.https://cmgearworks.com/product/dod...5-straight-axle-front-2500-3500-differential/

 

[JamesgPW]

I got the 2019 PW and put the Carli pintop and 37s and asked the guys at Nitro if they would regear. They said definitely 5.29s but they don't make them. They suggested asking Mopar if they have a 5.29 oem that you could put in and maybe its covered by the warranty. Thoughts on the regear and also anyone heard of oem 5.29?

I feel like 5.29 would be a bit extreme. 4.56 or maybe 4.88 would be more in line with keeping your current effective ratio.

 

[crazy jerry]

I have actually been wondering if the gears are the same

yes and no. like i said both trucks have their own part # direct from the aam site. pw is thin gear and spacer. non pw is thick gear. 4+1=5 3+2=5 if that makes sense. the width of the gear will end up the same either way

 

[trdt44]

yes and no. like i said both trucks have their own part # direct from the aam site. pw is thin gear and spacer. non pw is thick gear. 4+1=5 3+2=5 if that makes sense. the width of the gear will end up the same either way

I am a little more confused today. I pulled the diff cover and changed my fluid today while installing the Maple diff guard. I don't have a ring gear spacer. I just have a carrier that looks like the Trac-Rite diff at CM gearworks.

 

[hbleconey]

i checked in with Nitro gears and they have no intention of making a set for the 2019 and up PW and no color on what to use

 

[trdt44]

i checked in with Nitro gears and they have no intention of making a set for the 2019 and up PW and no color on what to use

I had also had conversation with Nitro a few months ago and they were not very helpful. They really don't know what is coming in the 2019 a new Rams. I assume they don't care because they don't sell a lot of gears for Rams. Based on my research the '19 and newer PWs have basically same axles as 14-18 trucks. I have read of some minor changes but I cannot verify. It is my understanding the gears for the 14-18 trucks will work in our '19 trucks. Yukon gear said it will not be a problem. Yukon does have a specific gearset for the front of 2014 and newer 2500s.

I want to run at least rear AAM gears. I am still trying to decide between 4.56 and 5.13 gears.

 

[crazy jerry]

I am a little more confused today. I pulled the diff cover and changed my fluid today while installing the Maple diff guard. I don't have a ring gear spacer. I just have a carrier that looks like the Trac-Rite diff at CM gearworks.

View attachment 218244 View attachment 218245 View attachment 218246

the spacer is the thing sandwiched between the carrier and ring gear. clearly you can see it in the photos

 

[crazy jerry]

i checked in with Nitro gears and they have no intention of making a set for the 2019 and up PW and no color on what to use

unfortunatly nitro isnt as knowledgable with these trucks as you would think. nice guys but not of much help on the technical side of things. jeeps might be more their area of expertise

 

[trdt44]

the spacer is the thing sandwiched between the carrier and ring gear. clearly you can see it in the photos

That is not a spacer. It is actually part of the carrier. For whatever reason the Trac-Rite diffs (including e-locker) have a groove machined into it.

https://cmgearworks.com/product/dod...5-straight-axle-front-2500-3500-differential/

eta: Here are some more pictures from Just Differentials. They do say that a ring spacer is required for a 2013.5 and new trucks. With that said I don't trust what they say as there is a lot of contradicting information on their site and they are connected to Nitro Gear.

https://www.justdifferentials.com/ELAAM9-25-p/elaam9.25.htm

 

[trdt44]

So here is some information that I received from Yukon Gear., fwiw. According to this statement non PW (2014+) trucks have the thinner ring gear while PW trucks still use the older thick ring gear.

In 2014 the ring gear mounting location moved closer to the carrier on all but the powerwagon.

The factory e-locker still uses the early deck height .

So you either run a pre 2013 gear with out a spacer, or go the weaker method that our “ competition “ uses and do the newer gears with a spacer.

 

[crazy jerry]

That is not a spacer. It is actually part of the carrier. For whatever reason the Trac-Rite diffs (including e-locker) have a groove machined into it.

its possible that my eyes are bad. when i had my cover off i looked into the valley of that V for a good long time and there sure appeared to be a parting line, like it was two seperate pieces. but its completely irrelevant anyways. whether that carrier is solid or theres two pieces, makes no difference. wyram sent me photo of his with the 5.13 aam gear installed and theres no additional pieces between the carrier face and 5.13 gear. so its simply remove the factory 4.10 ring and install the 5.13

 

[hbleconey]

I thought i'd bring this thread back to life and see if anyone has regeared a 2019+? With the new 8 speed transmission there seems to be some speculation on if a regear is needed on 37s and also how much this takes off your mpg

 

[62Blazer]

Aren't the top gears very similar (5 and 6 in the 6 speed, and 7 and 8 in the 8 speed)? I know the first couple of gears are lower in the 8 speed so that would help during take off, but in my opinion axle gearing really makes a difference on the highway as big tires and stock gears can make it hard to maintain OD on the freeway and will cause frequent downshifting.
And back on the first and second gears on the 8 speed, while you can put 37" tires on the truck with stock gears and the overall gearing is as good as a 6 speed truck with lower axle gearing installed, you are still losing take off power as compared to stock. Guess it's all relative.

 

[motorbreath]

I thought i'd bring this thread back to life and see if anyone has regeared a 2019+? With the new 8 speed transmission there seems to be some speculation on if a regear is needed on 37s and also how much this takes off your mpg

Glad you did, I have just been wondering about a regear to 4.88s or 5.13s over the past few days. Gears are something I've yet to acquire an adequate amount of knowledge on.

 

[hbleconey]

has anyone regeared a 19+ yet? where did they get the gears from

 

[motorbreath]

has anyone regeared a 19+ yet? where did they get the gears from

So, I haven't personally done it, but I did talk to AEV on the phone the other day and they confirmed that they use off the shelf 5.13 Nitro/Yukon gears for 19+ PW Prospector XLs.

 

[crazy jerry]

So, I haven't personally done it, but I did talk to AEV on the phone the other day and they confirmed that they use off the shelf 5.13 Nitro/Yukon gears for 19+ PW Prospector XLs.

i think theres more to the story they forgot to tell you or didnt want to tell you.
theres only been one version of 5.13 gears (whether they were made by aam, yukon or nitro). they were a direct fit to gm trucks with aam diffs .since dodge ram uses aam aswell they are a direct fit to some rams but not all. theyre not a direct fit in the rear because the coil spring diff. theyre not direct fit in the front because the pw carrier. some people have avoided a front spacer by using the side bearing adjusters to slide the carrier but i dont think thats a straight forward procedure (may have to grind one end of the shaft but i have very little info on this).
if your wondering that maybe the new pw have different axles, ive seen nothing to suggest theyre anything but exactly the same as previous years. . you can hodge podge parts together and make the gears fit in your housing but theres no plug and play option. sorry for the bad news