Got'r Done! Truetrac Diff Install
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Lead Driver
Joined: Jun 2003
Posts: 8,298
Likes: 25
From: Damon (South East Texas)
I was a bit surprised how easily it was to spin both tires now. 
Kinda caught me off guard.
Hook it, I'll pull it.
Joined: May 2007
Posts: 15,037
Likes: 4
From: Grand Lake, La.
. Watch out when it rains.
Senior User
Joined: Oct 2008
Posts: 466
Likes: 0
From: Ontario, CAN
Well, I finally got rid of my "one wheel wonder". Problem is, now I'm spinning two tires instead on one. 
Here's a few pics of the install and the end result. I put in a new VSS ring, as Ford recommends not to reuse it.
Truetrac Install pictures by mueckster - Photobucket
Here's a few pics of the install and the end result. I put in a new VSS ring, as Ford recommends not to reuse it.
Truetrac Install pictures by mueckster - Photobucket
Senior User
Joined: Aug 2004
Posts: 352
Likes: 0
From: Racine Wi
aldridgec,
what don't you like about the eaton? When I did mine two years ago, I was torn between the eaton and the tru-trac. I finially decided to got with the tru-trac and am very happy with it, but Corvette's have been running the eaton for years and I always had great success with them.
what don't you like about the eaton? When I did mine two years ago, I was torn between the eaton and the tru-trac. I finially decided to got with the tru-trac and am very happy with it, but Corvette's have been running the eaton for years and I always had great success with them.
Logistics Pro
Joined: Mar 2002
Posts: 3,881
Likes: 84
From: Wake Forest, NC
Yup, I've seen them and used them in other vehicles and work well.
First, they recommend 80w90 non synthetic in the box. I couldn't get a straight answer as to why, so I used 75w140 like the truck wants. I figured that was more of a function of the bearings and gears than the LS.
I think the gear lube didn't get a long with the clutches. I suffered a lot of chattering problems. I changed out the fluid to 80w90 semi syn. The fluid came out black after a very short time. I think the clutches wore that quickly. They still chattered, then eventually it stopped chattering but stopped gripping very well. I'm pretty sure I can spin one wheel pretty easily. Sometimes it helps, but not much better than the factory LS did.
The clutch rebulid kit is over $100 and I just haven't been inclined enough to try again. I feel the heavier gear lube is important to the truck and axle and will probably get the true trac if I ever mess with it. It was a waste of a lot of gear lube and time to not have a LS now, then to put a new clutch pack on top of it and risk damage to the bearings or gears from the wrong gear lube, I don't know.
First, they recommend 80w90 non synthetic in the box. I couldn't get a straight answer as to why, so I used 75w140 like the truck wants. I figured that was more of a function of the bearings and gears than the LS.
I think the gear lube didn't get a long with the clutches. I suffered a lot of chattering problems. I changed out the fluid to 80w90 semi syn. The fluid came out black after a very short time. I think the clutches wore that quickly. They still chattered, then eventually it stopped chattering but stopped gripping very well. I'm pretty sure I can spin one wheel pretty easily. Sometimes it helps, but not much better than the factory LS did.
The clutch rebulid kit is over $100 and I just haven't been inclined enough to try again. I feel the heavier gear lube is important to the truck and axle and will probably get the true trac if I ever mess with it. It was a waste of a lot of gear lube and time to not have a LS now, then to put a new clutch pack on top of it and risk damage to the bearings or gears from the wrong gear lube, I don't know.
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Senior User
Joined: Aug 2004
Posts: 352
Likes: 0
From: Racine Wi
Well, I am sorry for your problems! It sounds like I made the right choice in the True Trac. I originally was concerned about the strength of the true trac since they were advertising limits on tire size, but I called Detroit Locker and talked to their applications engineer and he said that once Detroit aquired the technology, they strengthened the weak areas and just had not updated the advertisements. He said that 1500 ft lbs of torque would not hurt it and it should outlast the truck. I am not making any where near that kind of torque, so I intend for it to last forever! Ironicly, they also recommended NOT to use synthetic, so I went with the 75/140 non syn and have had no issues. I have about 30K miles on it now and it is just as good as the day I put it in.
Jim
Jim
Logistics Pro
Joined: Mar 2002
Posts: 3,881
Likes: 84
From: Wake Forest, NC
I've never seen such fluid, I've only ever seen it as a synthetic , which made sense because of the wide spread. Good to know because the syn is $$$, and I'm more worried about the visc, not the syn.
Senior User
Joined: Oct 2006
Posts: 320
Likes: 0
From: Salem, OR
Another example is towing a boat and when you go to pull out of the water with your water-loged boat and trailer on that steep hill you truck may want to spin a tire, this is limited and power is transfered to the other wheel and you simply go.
I could go on but i hope that helps you understand the reasoning for it
Roland: I like it! I just bought a used rear with limited slip because i was changing gear ratio also, and it is so nice, granted i am not lighting up my tires like you, mine is to help me get trailers out of the feild that they get parked in then it rains and i dont like to have to get out and lock my hubs..lol
still plays with trucks
Joined: Mar 2004
Posts: 1,743
Likes: 3
From: Twin Falls Idaho
I can spin two tires at a time also. Mine just happen to be on the same side!!! reps for the write up. I have used the same dial indicator setup and its awesome. That and a pinion depth guage set make the this a "simple" job Nice work Roland! see ya in January I hope.
Barney
Barney
