What Differential is this in the Pics?
Thread Starter
TECH Fanatic
iTrader: (45)
Joined: Sep 2006
Posts: 1,122
Likes: 0
From: Clarksville, TN
What Differential is this in the Pics? What kind of differential do I have here? It is supposed to be an Eaton Truetrac but it doesn't look like it to me. What do you all think? What kind is it?
Thread Starter
TECH Fanatic
iTrader: (45)
Joined: Sep 2006
Posts: 1,122
Likes: 0
From: Clarksville, TN
Thread Starter
TECH Fanatic
iTrader: (45)
Joined: Sep 2006
Posts: 1,122
Likes: 0
From: Clarksville, TN
Thanks for the replies, guys. It is a 9 inch 31 spline, I was trying to figure out what brand and type. The shop I bought my 9 inch from from is swapping out the diff I posted above for a truetrac because I've had nothing but problems with the diff above and the rear end I bought was supposed to have a truetrac and be problem free.
If it is a detroit locker then I guess there are different styles? Is it maybe old and new styles? Because it doesn't look like the pics of a locker below does it?
If it is a detroit locker then I guess there are different styles? Is it maybe old and new styles? Because it doesn't look like the pics of a locker below does it?
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'
Brett Foote
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Thanks for the replies, guys. It is a 9 inch 31 spline, I was trying to figure out what brand and type. The shop I bought my 9 inch from from is swapping out the diff I posted above for a truetrac because I've had nothing but problems with the diff above and the rear end I bought was supposed to have a truetrac and be problem free.
If it is a detroit locker then I guess there are different styles? Is it maybe old and new styles? Because it doesn't look like the pics of a locker below does it?
If it is a detroit locker then I guess there are different styles? Is it maybe old and new styles? Because it doesn't look like the pics of a locker below does it?
Thread Starter
TECH Fanatic
iTrader: (45)
Joined: Sep 2006
Posts: 1,122
Likes: 0
From: Clarksville, TN
Thanks for the replies, guys. It is a 9 inch 31 spline, I was trying to figure out what brand and type. The shop I bought my 9 inch from from is swapping out the diff I posted above for a truetrac because I've had nothing but problems with the diff above and the rear end I bought was supposed to have a truetrac and be problem free.
If it is a detroit locker then I guess there are different styles? Is it maybe old and new styles? Because it doesn't look like the pics of a locker below does it?
If it is a detroit locker then I guess there are different styles? Is it maybe old and new styles? Because it doesn't look like the pics of a locker below does it?
When I put it in gear it would make a loud clunk, when I shifted gears it would clunk, when going from coast to accelleration it would clunk and the back end of the car would shift or jump to one side or the other. When turning the tires would break loose and skitter on the pavement even when hardly giving it any gas at all. It would also click and pop pretty bad when turning. I've barely driven my TA since it's been in there, it was bad enough to not even want to drive it. Some of this is probably normal for a locker but I paid for a Detroit Truetrac so is what I was supposed to have in the rear end when I bought it and it should have been smooth and quiet. But I just sent the POS mystery diff back to the shop yesterday and they promised to send a back a new Truetrac from Eaton.
Which one is a Truetrac, the top one? I just googled images for detroit locker and came up with those. The one that says detroit locker is from Moser's website.
When I put it in gear it would make a loud clunk, when I shifted gears it would clunk, when going from coast to accelleration it would clunk and the back end of the car would shift or jump to one side or the other. When turning the tires would break loose and skitter on the pavement even when hardly giving it any gas at all. It would also click and pop pretty bad when turning. I've barely driven my TA since it's been in there, it was bad enough to not even want to drive it. Some of this is probably normal for a locker but I paid for a Detroit Truetrac so is what I was supposed to have in the rear end when I bought it and it should have been smooth and quiet. But I just sent the POS mystery diff back to the shop yesterday and they promised to send a back a new Truetrac from Eaton.
When I put it in gear it would make a loud clunk, when I shifted gears it would clunk, when going from coast to accelleration it would clunk and the back end of the car would shift or jump to one side or the other. When turning the tires would break loose and skitter on the pavement even when hardly giving it any gas at all. It would also click and pop pretty bad when turning. I've barely driven my TA since it's been in there, it was bad enough to not even want to drive it. Some of this is probably normal for a locker but I paid for a Detroit Truetrac so is what I was supposed to have in the rear end when I bought it and it should have been smooth and quiet. But I just sent the POS mystery diff back to the shop yesterday and they promised to send a back a new Truetrac from Eaton.
Thread Starter
TECH Fanatic
iTrader: (45)
Joined: Sep 2006
Posts: 1,122
Likes: 0
From: Clarksville, TN
You had a locker in there, thats the nature of the beast. IMO they are absolutely horrible to drive on the street. You'll be happy you returned it for the tru trac. Don't be surprised though when you see that the tru-trac for the 9 inch will look almost exactly like the locker.
If you google Detroit Truetrac you will find that most of the pics look similiar and they don't look like what I had in there. If you google soft locker or locker carrier pics you'll get more of what I had.
I just want to make sure I get the correct Truetrac diff back. Is there more than one type of Truetrac for a 31 spline 9 inch? lol Part number 913A586 is what I see.
The TrueTrac for the 9" will look completely different then the ones you googled. It will look very much like what you originally posted. That's probably how the mistake was made during assembly.
Shane
Shane
Well all the pics I find of the Truetrac don't look like that though
If you google Detroit Truetrac you will find that most of the pics look similiar and they don't look like what I had in there. If you google soft locker or locker carrier pics you'll get more of what I had.
I just want to make sure I get the correct Truetrac diff back. Is there more than one type of Truetrac for a 31 spline 9 inch? lol Part number 913A586 is what I see.
If you google Detroit Truetrac you will find that most of the pics look similiar and they don't look like what I had in there. If you google soft locker or locker carrier pics you'll get more of what I had.
I just want to make sure I get the correct Truetrac diff back. Is there more than one type of Truetrac for a 31 spline 9 inch? lol Part number 913A586 is what I see.
tru-trac for 9 inch:
Locker for 9 inch:
Thread Starter
TECH Fanatic
iTrader: (45)
Joined: Sep 2006
Posts: 1,122
Likes: 0
From: Clarksville, TN
Basically what everyone is trying to tell you is that the tru-trac for a 9" does not look like the pics that you found. Those pics are much like the one you would put in a 10 bolt. Why don't you just look at the box before its installed and verify the part # is correct. And yes there is only 1 type of tru-trac.
Thanks for the clarification, I appreciate it! I did happen to find a pic labeled truetrac like you posted on Summit's website and the part was discontinued. You would think (or at least I would) that all of the vendors selling 9 inch diffs would have more accurate pics of the part they are selling rather than just the "generic" picture of the part that fits a completely different application than what they are selling. Your pics help a lot though, thanks!
Thanks for the clarification, I appreciate it! I did happen to find a pic labeled truetrac like you posted on Summit's website and the part was discontinued. You would think (or at least I would) that all of the vendors selling 9 inch diffs would have more accurate pics of the part they are selling rather than just the "generic" picture of the part that fits a completely different application than what they are selling. Your pics help a lot though, thanks!
Thread Starter
TECH Fanatic
iTrader: (45)
Joined: Sep 2006
Posts: 1,122
Likes: 0
From: Clarksville, TN
Teching In
Joined: Dec 2008
Posts: 19
Likes: 0
From: Sacramento, CA
The detroit locker in the first pics is a soft locker(you can tell because you cant see through it,the soft lockers have preload washers in them to take the bang and pop out.
The tru-trac in the other pictures and on detroits site is for a quick change,for sprint cars.
The tru-trac in the other pictures and on detroits site is for a quick change,for sprint cars.
