Converting an open diff to a LSD?
Lead Driver
Joined: Jun 2003
Posts: 8,298
Likes: 25
From: Damon (South East Texas)
Differential Case.pdf The special tools aren't totally necessary, but there is a lot of good info/specs in there. When I purchased the Detroit Truetrac, it came as a kit with new carrier bearings and adjustable shim packs. This made the installation process much easier since I wasn't R&I'ng the old bearings.
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New User
Joined: Nov 2015
Posts: 15
Likes: 0
From: Southern Oregon
Here's the PDF. I promised. Attachment 129859 The special tools are totally necessary, but there is a lot of good info/specs in there. When I purchased the Detroit Truetrac, it came as a kit with new carrier bearings and adjustable shim packs. This made the installation process much easier since I wasn't R&I'ng the old bearings.
Attachment 129859 The special tools are totally necessary, but there is a lot of good info/specs in there. When I purchased the Detroit Truetrac, it came as a kit with new carrier bearings and adjustable shim packs. This made the installation process much easier since I wasn't R&I'ng the old bearings.
Lead Driver
Joined: Jun 2003
Posts: 8,298
Likes: 25
From: Damon (South East Texas)
I got the entire kit for less or about the same price as the just the differential. 
Hotshot
Joined: Mar 2014
Posts: 10,750
Likes: 1,065
From: Douglassville, PA
Cargo Master
Joined: Nov 2005
Posts: 2,767
Likes: 58
From: East Tawas, MI
Long story short.
I bought a low mile LSD from a guy in Tennessee (old thread). 400 bucks.
After New Holland freight quote was 203.00 it turned into over a grand for shipping.
It's under the truck, chatters like the clutches are shot no matter how many times I change the CORRECT FRICTION MODIFIER and lube.
Clay at Riff Raff is a sponsor here and sells the complete kit ad he's a phone call away for issues.
Shoulda woulda coulda!!!
Go with the true trac from a trusted source.
Denny
I bought a low mile LSD from a guy in Tennessee (old thread). 400 bucks.
After New Holland freight quote was 203.00 it turned into over a grand for shipping.
It's under the truck, chatters like the clutches are shot no matter how many times I change the CORRECT FRICTION MODIFIER and lube.
Clay at Riff Raff is a sponsor here and sells the complete kit ad he's a phone call away for issues.
Shoulda woulda coulda!!!
Go with the true trac from a trusted source.
Denny
Posting Guru
Joined: May 2014
Posts: 1,072
Likes: 0
From: Dustbowl, NV
Another thumbs up for the Truetrac as opposed to other LSD options- the Detroit Locker is great/strong but noisy, and air or electric lockers are expensive and obviously, need air or 'lectricity plumbed also.
The Truetrac is reliable, no clutches to wear out, no switches to engage; just seamless! Works when you need it and you don't have to think about it.
The Truetrac is reliable, no clutches to wear out, no switches to engage; just seamless! Works when you need it and you don't have to think about it.
Lead Driver
Joined: Dec 2006
Posts: 7,093
Likes: 147
From: San Diego, CA
x2 for that. Mine has the LSD but it is very old and feels like an open diff. It works great in the dirt but not so much on the pavement (even when it's wet).
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New User
Joined: Nov 2015
Posts: 15
Likes: 0
From: Southern Oregon
I just checked and unfortunately I don't have the LSD in the back :/
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New User
Joined: Nov 2015
Posts: 15
Likes: 0
From: Southern Oregon
I purchased it from an Ebay seller several years ago. It came with the 2 new side bearings & races, shim packs (adjustable multi piece shims vs the stock thick ones), the Truetrac unit, and a cover gasket (didn't use). After some looking now, I don't see the seller or anyone else that offers the complete kit. You can, however, purchase a Carrier Bearing Install kit and the Truetrac separately. The prices are substantially higher now than when I got mine. I got the entire kit for less or about the same price as the just the differential.
I got the entire kit for less or about the same price as the just the differential.
Lead Driver
Joined: Jun 2003
Posts: 8,298
Likes: 25
From: Damon (South East Texas)
Laughing Gas
Joined: Nov 2010
Posts: 1,159
Likes: 33
From: Utah
I like using these super shim kits:
Ford 10 25" Sterling 10 5" Rearend Carrier Shims RMS Super Shim Kit New | eBay
Makes the process easier as the design keeps the thin shims together.
Ford 10 25" Sterling 10 5" Rearend Carrier Shims RMS Super Shim Kit New | eBay
Makes the process easier as the design keeps the thin shims together.
Postmaster
Joined: Nov 2015
Posts: 4,807
Likes: 125
From: Colorado Springs
This is the one to look for. Eaton 915A550 Detroit Truetrac 10.5" 35 Spline Differential Here's one from Summit Racing. Eaton Detroit Truetrac Differential Steel 915A550 Ford 10 25" 35 Spline | eBay NOTE: The 10.25" and 10.5" use the same carrier. Also, here is the carrier bearing and shim kit; similar to the one I used. 10.5 inch Timken Carrier Bearing & Shim Kit-Broncograveyard.com Together, they are about $40 more than what I paid. Not a bad price.
That's what I'm planning on installing too!
Lead Driver
Joined: Jun 2003
Posts: 8,298
Likes: 25
From: Damon (South East Texas)
I like using these super shim kits:
Ford 10 25" Sterling 10 5" Rearend Carrier Shims RMS Super Shim Kit New | eBay
Makes the process easier as the design keeps the thin shims together.
Ford 10 25" Sterling 10 5" Rearend Carrier Shims RMS Super Shim Kit New | eBay
Makes the process easier as the design keeps the thin shims together.
Ford 10.25/10.5 Carrier Super Shims-Broncograveyard.com
My install kit included the super shims.
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New User
Joined: Nov 2015
Posts: 15
Likes: 0
From: Southern Oregon
This is the one to look for. Eaton 915A550 Detroit Truetrac 10.5" 35 Spline Differential Here's one from Summit Racing. Eaton Detroit Truetrac Differential Steel 915A550 Ford 10 25" 35 Spline | eBay NOTE: The 10.25" and 10.5" use the same carrier. Also, here is the carrier bearing and shim kit; similar to the one I used. 10.5 inch Timken Carrier Bearing & Shim Kit-Broncograveyard.com Together, they are about $40 more than what I paid. Not a bad price.