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Super Moderator
Joined: May 2004
Posts: 29,380
Likes: 118
From: Central Coast of CA
I changed out the OEM rear diff in my Lightning when it started slipping bad. I went with the Detroit True-Trac clutchless rear diff.
It's a geared differential so it won't wear out like a clutched design will.
Stewart
It's a geared differential so it won't wear out like a clutched design will.
Stewart
Post Fiend
Joined: Mar 2009
Posts: 11,798
Likes: 14
From: Mt. Shasta California
thanks for all the help, i hope every one will stay friends 
. and by the way has any one heard of prowertrax no slip diff's YouTube - Difference btw. Locker and Limited Slip i put a link to a youtube clip they got out looks impressive
. and by the way has any one heard of prowertrax no slip diff's YouTube - Difference btw. Locker and Limited Slip i put a link to a youtube clip they got out looks impressive
Post Fiend
Joined: Mar 2009
Posts: 11,798
Likes: 14
From: Mt. Shasta California
They all can wear out if not treated right. The LS and Posi diff will last a long time with the proper fluid. Clutches can chatter and wear out without the proper friction modifiers in the oil and the discs are cheap also. I never wore a set of clutches out. Ford and Chevy make a special gear oil for those units and I imagine it gets repaced with the wrong stuff.
Super Moderator
Joined: May 2004
Posts: 29,380
Likes: 118
From: Central Coast of CA
They all can wear out if not treated right. The LS and Posi diff will last a long time with the proper fluid. Clutches can chatter and wear out without the proper friction modifiers in the oil and the discs are cheap also. I never wore a set of clutches out. Ford and Chevy make a special gear oil for those units and I imagine it gets repaced with the wrong stuff.
I was saying they won't wear like a clutch design does. The geared design is better and will last longer before wearing out when compared to an OEM clutch design.
Stewart
Post Fiend
Joined: Mar 2009
Posts: 11,798
Likes: 14
From: Mt. Shasta California
Actually the clutch design will last quite long with the right oil and I think it's debatable but I don't want to debate it.
Posting Guru
Joined: Sep 2001
Posts: 1,539
Likes: 3
The true-trac actually impresses me quite a bit. They are proven to hold 6-700 rear wheel horsepower launching on the dragstrip and being quite reliable at that level. Above that they become a little questionable but some are running em upwards of 9-1000 RWHP. At that level you usually need a detroit locker or a spool as the friction setups just can't hold the power at those levels. Honestly not sure just how long the true trac's will last, but short of someone exploding one I have yet to hear of a failure. All that said though my camaro is spooled lol.
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