Limiting differentiated slippage.

[will_95gt]

Alright, StangNeters I write to you with hopes of elucidation!

A friend of mine shot me a text the other day asking what year Mustangs began including LSD's--the differentials not the hallucinogens. I told him that I'm pretty sure Ford refers to this as Trac-Loc and that I'm not really sure of the answer.

So I ask, LSDs are what prevents the phenomena of one-wheel burnouts, right?

Also, when did Ford began implementing it's "trac-loc" differentials (if thats what ford calls it) into Mustangs?

Thanks in advanced, folks,

-Will

 

[earleys94gt]

LSD's allow the wheels to turn at different speeds around corners, i.e. on a right turn the rear passenger wheel turns slower than the rear driver wheel since it has to travel a shorter distance. A True-Locker, on the other hand, makes both the wheels turn at the same rate and explains why you get some tire squeal when cornering.

As for when Ford started implementing the Trac-Loc, I believe they started offering it in 1984/85??? If it were standard on a Mustang, I would guess maybe starting in 94?? Also, keep in mind Ford also put the Trac-Loc in the F-Series and Rangers.

 

[earleys94gt]

There should be an "L" on the tag bolted to the rear-end meaning it's a Trac-Loc.

For example, 3.27 would be 3L27.

 

[revhead347]

Trac-Loc came standard on V8 Mustangs way before 94'. Not sure the exact year though. Trac-Loc is a form of positraction that allows one wheel to turn at a different rate, or not to turn under high torque loads. A true locker is either locked or unlocked. Just because you have a true locker doesn't mean your wheels will squeak around turns.

Kurt

 

[HISSIN50]

All of the V8 aero foxes ('87+) had 8.8" rears with TL.

The late-model four-eyes had 7.5" rears IIRC.

 

[BREWTUS428CJ]

1986. Not just the first year of fuel injection and center tail lights. 1st year of 8.8 as well, only on v8's, came with limited slip differential, not sure if it was standard or optional. I used to have one, lost it to a drunk driver. Have some of the engine parts in my 94 though, so some of it lives on. 1985 and prior 7.5". 7.5's did come with trac-lok on GT's at least as early as 1982, this was a standard feature on the 'GT Turbo' for 82/83 (later the SVO for 84-86)model.

And this is true: if you have a locker doesn't mean your tires squeal around turns, might not always have traction, but if you have a locker, and you are on dry level pavement and you don't hear tire squeal going around turns, either your tires are shot or somebody put you together like a cheap watch when they sold you that "locker"

 

[revhead347]

That is a serious misunderstanding of how a locker works. Unless you have the throttle down, the tires shouldn't squeal around turns, even on dry level pavement. Under normal turning situations the wheels will turn at a different rate.

Kurt

 

[BREWTUS428CJ]

My bad should have specified, a detroit locker automatically dis-engages(ratchets) during turns(meaning you get no tire squeal unless you hammer the throttle) and makes a racket doing it. I run a lot of selectables, in lock mode your locker is locked, no difference in wheel speed. Like a spool. They also cost a mint, you probabaly wouldnt run either unless you planned on spending a lot of time at the track. My tires squeal around turns with a limited slip, probly cause I do hammer the throttle around the turns more fun that way.