8.8 28 Spline IRS trac-loc
- Thread starter 98LSC32V
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Right on the Mark
Dedicated LVC Member
I thought I read all new Ford in box units are made for IRS then they can work for both. You can grind the little taper into the non IRS side gears with a dremel and a stone no biggie.
chris2523
93 Mark VIII
no, i don't believe the 28 spline track lock is available anymore.
your options include a used unit, a different style of limited slip unit, or the solid axle unit.
my 93 has a solid axle unit, and it appears my 96 does as well. no issues here. i removed the c clips from the half shafts.
that's probably true, but finding a new one will be difficult. looks like they have been discontinued.
your options include a used unit, a different style of limited slip unit, or the solid axle unit.
my 93 has a solid axle unit, and it appears my 96 does as well. no issues here. i removed the c clips from the half shafts.
that's probably true, but finding a new one will be difficult. looks like they have been discontinued.
Right on the Mark
Dedicated LVC Member
Yeah looks like Ford 28's are gone.
slowmkviii
Dedicated LVC Member
Just go 31 spline
Why would they stop making it?
Why would they stop making it?
racecougar
Well-Known LVC Member
"Going 31 spline" doesn't correct the issue the OP was concerned about (beveled side gears).
slowmkviii
Dedicated LVC Member
Its stated on the ford racing site that the new ones will fit IRS.
http://www.steeda.com/store/ford-racing-mustang-torsen-differential-161-M-4204-T28/ is what I picked up but have yet to install. Wish I knew someone fairly priced to do the work up here in Appleton!
Right on the Mark
Dedicated LVC Member
600 for a POSI!! That's 1.5 times what I paid for my whole MK8. LOL
Wawful
LVC Member
That Steeda is a torsen LSD, which IMO is a much sturdier and heavy duty LSD than the trac-loc system,which I believe uses clutch plates on the outside of the side gears inside of case.
SATURN5
Dr. Frankenstang
Right on the Mark
Dedicated LVC Member
I've gone 11.3's with a Ford 28 spline unit. I did put the upgraded Ford clutches in it, but those where cheap.
chris2523
93 Mark VIII
been a lot of people with premature wear issues in the Torsen units. and while they may be stronger overall, they have a habit of loosing their torque biasing ability after a while. they changed the metallurgy sometime in the 2000s, as i believe the torsen dif is made by a different company now, and has changed hands a few times. or something.
the fix is a clutch pack rebuild with a track lock, but a much more complex rebuild for a torsen.
Hot*Mk8
Dedicated LVC Member
This is what's going into my car this weekend along with 3.73s. 
http://www.ebay.com/itm/912A562-Det...Parts_Accessories&hash=item5662feb6c5&vxp=mtr
http://www.ebay.com/itm/912A562-Det...Parts_Accessories&hash=item5662feb6c5&vxp=mtr