posi rear end ? - MustangForums.com



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Old 02-09-2014, 06:19 AM   #1
swanny
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Default posi rear end ?

I have an 89 lx with carbureted 306 and posi only works when turning left. I was wondering because I want to replace posi how to tell or maybe u guys know if isa 8.8 31 or 28 spline. it has a 4 lug wheel if that matters
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Old 02-09-2014, 02:13 PM   #2
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pull a axle and count the spines. then you will know. if it is a stock rear it will be 28s
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Old 02-09-2014, 06:53 PM   #3
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I believe its stock so thank u . I want to order parts so I can put right back together
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Old 02-10-2014, 06:50 AM   #4
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Ifs its a stock trac-loc just spend money on the clutches ~$70. Should be the same for 28 and 31 spline units.
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Old 02-10-2014, 10:07 AM   #5
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^^ boss is on it.
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Old 02-11-2014, 06:27 AM   #6
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where are u finding clutches for 70 dollars ? I found them on jegs for 100$
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Old 02-11-2014, 06:28 AM   #7
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i was going to just buy the whole trac lock. how hard are the clutches to change?
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Old 02-11-2014, 02:36 PM   #8
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they are not bad the worst part is the S spring other then that cake work to me anyway.
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Old 02-11-2014, 03:15 PM   #9
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They use to be $69. Guess they have gone up. Been a few years since I bought a set.

$75 at 5.0 resto. Carbon discs are $108.
http://www.latemodelrestoration.com/...Lok-Clutch-Kit
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Old 02-11-2014, 06:01 PM   #10
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K Thanks I think ill attempt it. the guy I bought car from said it is original rear end 5.0 efi originally then 351 now 306 carbed with 351 on stand
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