Truetrac on sport s 3:73? What's the spline count?

[Jt-wrx]

Lurked for awhile, first post but i'll share my build as i go, will be picking up my sport s 6spd in a day or two. Would like to truetrac both ends, can't seem to find answer if this is actually possible? Does anyone know on this yet?

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[Matt84]

I have been researching this pretty extensively although haven’t found much. From what I can tell all Gladiator axles have 32 spline and the only aftermarket option I’ve seen are ARB air lockers, so not what you and I are looking for. I have not seen anything for the JL/JT from Eaton. I’m trying to decide between the Rubicon or getting a Sport S and regearing. Ideally I would put 4.56 and 35s on the sport s with truetrac front and rear as I don’t plan on doing any crawling, just moderate trail use, so I don’t really need the Rubi.

There was a discussion on this forum months ago about it but I don’t know if anyone found out new info since then.

https://www.jeepgladiatorforum.com/...trac-helical-limited-slip-differential.16636/

 

[Jt-wrx]

We have the same exact plan and wish list! I'll work with our local installer of these such things and see. If i read somewhere that the sport s is dana 44 regular 30 spline...we might be in luck, it's the wide axle rubicon/max tow that get 32 spline? I suspect eaton makes the lockers for the rubicon anyway no?

Will look into this further in the new year, they may want to look at my truck in person to get more answers, which i'll gladly do.

 

[Matt84]

I may be wrong but it’s my understanding that all JTs have 32 spline, that Rubicon and Max Tow are just .75 inch longer on each side. I’ll keep you updated if I find confirmation on that or find anything different.

 

[Jt-wrx]

You could be right, i had my local 4WP rep check into it and he said he would call eaton and yukon to find out more about truetracs and regearing. He called me back to tell me it's in R&D now. Fingers crossed things will come out soon.

 

[kd1yt]

I'll be very interested in what you're able to find. This has been an interest of mine also; as of early to mid summer I'd done some asking around (not only here on the forum but also with some possible suppliers) and at that time was coming up empty, but hopefully the situation will improve over time
https://www.jeepgladiatorforum.com/...trac-helical-limited-slip-differential.16636/

 

[Jt-wrx]

i found meyers manufacturing and eaton performance on instagram, i'm bugging them there already, maybe anyone else with some insta can hit them up also, i just bugged them on posts they had about the truetrac, one sad soul has been waiting for one for the tundra rear ends that have been same since 2007...i hope it won't be like that for these trucks

 

[Bjeepz]

i found meyers manufacturing and eaton performance on instagram, i'm bugging them there already, maybe anyone else with some insta can hit them up also, i just bugged them on posts they had about the truetrac, one sad soul has been waiting for one for the tundra rear ends that have been same since 2007...i hope it won't be like that for these trucks

I wouldn't worry about that kind of hold up with JT's! Tundra's don't have quite the aftermarket following and off road scene that Jeep Wrangler based vehicles do! I would also like a TrueTrac up front on my Overland!

 

[Jt-wrx]

Interesting timing bringing this one back up! On the way to work this am and ice still in edge of curb lane, spinning ain't winnin, 98% bone dry road and i can't go anywhere without 4x4, looks a little funny to the rest of traffic on the rush hour commute, so frustrating on regular street when the wrong one spins in certain conditions, mostly it's right hand turns curb lane wet or worse conditions you need to accelerate to speed quickly and nothing but inside spin...hate that. I think the clutch packs on the tru-lok lsd i optioned on my last ram maybe made it 80,000km so decided against the option with this truck after learning the proper way to do an lsd is to go for truetracs aftermarket. Sad that FCA wouldn't just offer truetrac as the option instead of the trak-lok crap. Hurry up Eaton! I'll fire them in pronto tonto!

 

[rolape2]

I know it has been a bit.. Best I can tell, The Non-Rubi Wrangler/Gladiator is 32 spline. The MaxTow/Rubicon is 35 spline. Normal people Dana 44 is 30 spline. I have a question out to Gealson Torsen asking if they have any plans to build a unit for us. Will respond back if/when I here from them.

 

[Renegade]

I know it has been a bit.. Best I can tell, The Non-Rubi Wrangler/Gladiator is 32 spline. The MaxTow/Rubicon is 35 spline. Normal people Dana 44 is 30 spline. I have a question out to Gealson Torsen asking if they have any plans to build a unit for us. Will respond back if/when I here from them.

All Advantek 44s have 32 spline shafts. Here is the info on Advantek axles:
https://media.spicerparts.com/cfs/files/media/82zRkJu59KQ7gJBaf/PERF-JLADVANTEK-42018.pdf?token=eyJhdXRoVG9rZW4iOiIifQ==&store=original

 

[Jt-wrx]

great info, ima hold out for truetrac's, come on eaton!

 

[rolape2]

All Advantek 44s have 32 spline shafts. Here is the info on Advantek axles:
https://media.spicerparts.com/cfs/files/media/82zRkJu59KQ7gJBaf/PERF-JLADVANTEK-42018.pdf?token=eyJhdXRoVG9rZW4iOiIifQ==&store=original

Exactly, that is the issue. Wrangler/Gladiator Non Rubicon is 32 spline. Rubicon is 35 Spline....... No Truetrac/ Gleason/Torsen support. Did you notice there is no mention of any traction aiding device.

 

[Jt-wrx]

where does it say 35 spline? i only see 32 spline, until your post i had only heard it used to be 30 spline and new stuff 32 spline, so haven't seen 35 mentions anywhere yet?

 

[Renegade]

Exactly, that is the issue. Wrangler/Gladiator Non Rubicon is 32 spline. Rubicon is 35 Spline....... No Truetrac/ Gleason/Torsen support. Did you notice there is no mention of any traction aiding device.

You are incorrect. ALL Dana 44 Advantek axles are 32 spline. It says that right on the left side of the page. It mentions locking differentials right in the center. Put your glasses on...

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