Being that I have verified certain non turbo supras did come with LSD I suspect sc's did too.Check your axle code on your drivers door.The following letters decode it:
A:16" wheel B:still figuring it out
01:4.08 gear 02:3.76 03:3.26 04:3.53 05:4.08
A:Open diff B:LSD D:LSD

So mine is A01A.16" wheels,4.08,open diff.Post them up hoping someone has stock LSD!

 

I have to date verified on Tis( Toyota information system) 2 non turbo auto MKIV with factory LSD.Rare as hell.

 

They were an option on non-turbo Supras. They weren't even an option on these cars. I wouldn't expect to find any anytime soon.

 

That's what I was thinking as well. Not an option on our SC's. I might be wrong tho!

 

A03A: 16", 3.26, Open Diff..... damn it.

Is the gear ratio info correct? Someone had posted some info but said pretty much all 6cyl 5spd SC's had 4.08 ratio.

 

This is true. All of them from 92-97 were 4.083:1 (and open diff). No LSD option at all on SC's. Supra NA's yes.

The only way an LSD will be in there is if someone swapped an entire Torsen TT pumpkin or had a Torsen or clutch-type installed into their 4.08 or other ratio pumpkin.

 

Mines say 3.26 though if "03" in the code actually means 3.26... or

 

The Na lsd part number is good in the Lexus parts catalog.Either it understands Soarer part numbers(which came with it) or a few made it stateside on sc's.I have been working for Toyota for 10 years and have checked with my lexus wholesale guy on the part number being in his system..Problem is it doesn't specify fitment on year or whether it was Sc3 or Sc4.I believe the Sc's with all bells and whistles came with it.Both Na supras I found it on came that way.One was a SE and the other a Rsp.Started this thread to inform people and hopefully get a good hit.

 

I'm betting on the Soarer part number sneaking in.

Either way... 92 5-speed with all options here. However, open diff

 

It has to be a Soarer part number. Lexus USA did not have limited slip differential options for any of their cars until the IS300, 2010+ IS-F, LF-A and now some of the GS F-Sport and LS F-Sport vehicles.

I wish it weren't so but that's how they did it in the 90's. It has always bugged me how the JZZ30 Soarer series was a perfectly good car and that Lexus had to give us the most watered down version.

 

I don't think anyone with an SC is going to be finding a B on their sticker but still very good info.
could be in the system as a lot of parts cross over but it wasn't an option.

 

The LSD thread on another forum reads of a guy finding LSD on a bone stock sc4.lol

 

Unless he was original owner, I would be highly suspicious. Since it's so easy to swap one in, that would be my first instinct if someone says they found unicorn tears in their drivetrain.

 

Unicorn tears.. that is hilarious, I think I would have to see a picture of the SC, with the vin, list of options, with the sticker with the B, and the lsd unit showing, and then a video burnout to supplement it, and then maybe It happened