Tightest Posi?
Tightest Posi? I am tired of inside wheel spin in spirited street driving - which differential has the highest bias for the 7.5" rear?
- Torsen T2-R
- Auburn Pro
- Eaton Posi
I also do some drag racing and occasionally get one wheel spin during burnout. I understand that my 98 SS has an Auburn stock (which is still apparently still good with about 50 lb-ft bias torque).
Thanks,
Steve
- Torsen T2-R
- Auburn Pro
- Eaton Posi
I also do some drag racing and occasionally get one wheel spin during burnout. I understand that my 98 SS has an Auburn stock (which is still apparently still good with about 50 lb-ft bias torque).
Thanks,
Steve You can have the Eaton tuned as tight as you want it, all the way to 800#'s. The bias on a torsen is hard to really measure sonce it is torque biasing, meaning the tightness of the unit depends on how much torque is applied.
Originally Posted by mzoomora
You can have the Eaton tuned as tight as you want it, all the way to 800#'s..
Originally Posted by mzoomora
The bias on a torsen is hard to really measure sonce it is torque biasing, meaning the tightness of the unit depends on how much torque is applied.
Anyone else?
Thanks,
Steve 
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From: Bucks County, Pa.
Originally Posted by schultzsj
Is this something you request from the factory or something the installer can set?
If you mainly care about going around turns, get a T2R (or a True Trac, with less bias than a T2R, if they still even make them for 10 bolts).
If you're worried about the diff grenading on launch with sticky tires, get an Eaton or Auburn Pro (but you're still on borrowed time concerning the grenading thing).
Originally Posted by schultzsj
Torsen has the test method and bias torque values posted on their website specifically so we can determine if our differentials are shot - mine apparently is not.
Originally Posted by mzoomora
What I was saying is that it isnt apples to apples since they function in two different ways. If you want a lot of initial preload than the Auburn pro or Eaton is the way to go, if you want to keep stockish turning then the Torsen is better.
Keep it coming!
Steve Trending Topics
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From: Vancouver,[KITSILANO].B.C. Canada *WestCoast*
Originally Posted by dailydriver
Try calling one of our Eaton dealer sponsors about this, but I know they will try and talk you out of 800# preload springs for any street use (it becomes too much like a locker with these).
If you mainly care about going around turns, get a T2R (or a True Trac, with less bias than a T2R, if they still even make them for 10 bolts).
If you're worried about the diff grenading on launch with sticky tires, get an Eaton or Auburn Pro (but you're still on borrowed time concerning the grenading thing).
If you mainly care about going around turns, get a T2R (or a True Trac, with less bias than a T2R, if they still even make them for 10 bolts).
If you're worried about the diff grenading on launch with sticky tires, get an Eaton or Auburn Pro (but you're still on borrowed time concerning the grenading thing).
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From: Las Vegas
800# units will eat the fiber clutches in a heart beat.
You can however, tune an Eaton as tight as you want even without the pre-load pack. In fact, in the tuned units I build, I dont even use the pre-load pack. But they do come with 200, 400 and 800# packs from the factory.
If you even remotely think about the 800# pack, you will want to upgrade the clutch pack to solid steel clutches for about $95 (well, you'll want to upgrade no matter what in reality, if you want it to live.)
I have tuned them right up to being damn near solid and dragging tire every turn..... but that gets old real quick.
The Auburn is a great throw away unit when you wear it out.... or you can send it in to Auburns DREX exchange program and get another one for roughly $100.... but then you'll have to do it again when you roast that one too.
My vote is for a tuned Eaton. But remember, its a 7.5.... its gonna destroy itself and its not a question of "IF"... it is more of a question of "WHEN".
You can however, tune an Eaton as tight as you want even without the pre-load pack. In fact, in the tuned units I build, I dont even use the pre-load pack. But they do come with 200, 400 and 800# packs from the factory.
If you even remotely think about the 800# pack, you will want to upgrade the clutch pack to solid steel clutches for about $95 (well, you'll want to upgrade no matter what in reality, if you want it to live.)
I have tuned them right up to being damn near solid and dragging tire every turn..... but that gets old real quick.
The Auburn is a great throw away unit when you wear it out.... or you can send it in to Auburns DREX exchange program and get another one for roughly $100.... but then you'll have to do it again when you roast that one too.
My vote is for a tuned Eaton. But remember, its a 7.5.... its gonna destroy itself and its not a question of "IF"... it is more of a question of "WHEN".
Originally Posted by Studytime
How about just a cheap mini-spool?
Steve