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9" limited slip diff question.

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Old 01-25-2006, 12:38 PM
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Default 9" limited slip diff question.

ok, i have this limited slip (aka here as a posi) that im buying from a friend.
i THOUGHT i was getting a locker.... but it turns out he didnt know the diff between a locker and a clutch type limited slip, he just thought all limited slips for 9" rears were called lockers.

im not a 9" expert by anymeans.. ive done alot of research on lockers over the last few weeks since thats what i thought i was getting. but i dont know where to start on "posi"s

this is what i have.. how strong is it? my entire rear is "bulletproof", fully aftermarket everything for strength, except this posi..... right now, this is going into a cammed daily driver that sees strip duty... but the car will eventually be boosted into the 600RWHP range, and launched hard at full weight...
basically i want to know if i should buy it and use it for awhile, or back out of the deal.. its a friend and i really dont want to back out of a deal with him, but......
anyhoo hers the pics. click to enlarge. they're huge.




Old 01-25-2006, 01:37 PM
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Beleive that is a trac loc limited slip, common in a lot of fords. Wont hold up to very much and i severely doubt it will last a few launches in the 600's. Its not a locker by any means so I would back out and have him throw it on ebay or something.

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Old 01-25-2006, 01:41 PM
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thanks..

anyone know how much this will safely hold? i do have a few other friends that might be able to use it... they're staying n/a for now...
Old 01-25-2006, 01:56 PM
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No dropping the clutch it should hold 450 i would imagine.

CMC
Old 01-25-2006, 03:07 PM
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Originally Posted by Hawkcmc
No dropping the clutch it should hold 450 i would imagine.

CMC
im alittle confused on your reply.

are you saying it will hold 450 as long as you're not dropping the clutch??

or are you saying:
"no, dropping the clutch, it should hold 450"

??
Old 01-25-2006, 05:38 PM
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Sorry, if you dont drop the clutch at 5000 rpms then I would imagine the diff should hold atleast 450 maybe a bit more.

CMC
Old 01-26-2006, 10:09 AM
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That is a 4 pinion Trak Lok . It will take your drag strip abuse if rebuilt right. Will it fail, eventually. Just like everything else .




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