Do I have a limited slip differential?

[precisionpowercleaning]

Are there any vin codes or tags that would tell me if I have a limited slip differential? I could just go out and pour the coals to her but she has some miles and don't want to tear anything up. She's a late 99 f250 7.3 2WD

Thanks
Cory

[Bad Night]

Yea there is a tag on the right side of the diff. On the first line there are some numbers . mine says , 4.10 F81A AUG . On the second line are some other numbers and finally 2 letters ....... LS . This means it is a limited slip .

That being said mine is a Dana 80 , yours is probably a Sterling with a 10.5 ring gear .

[SCUFFY828]

on the tag on the rear end , it give gear ratio like 3.73 if you have a limited slip, it says 3 L 73

[Bad Night]

Originally Posted by SCUFFY828

on the tag on the rear end , it give gear ratio like 3.73 if you have a limited slip, it says 3 L 73

Hey Scuffy is that how the sterlings let you know ?

[SCUFFY828]

Originally Posted by Bad Night

Hey Scuffy is that how the sterlings let you know ?

yep

[Bad Night]

Cool , wasn't sure on those .

[precisionpowercleaning]

Sweet, thanks guys I'll check it in the morning!!

Thanks again!!

[Zaairman]

Easier way... Check the white tag on the driver's door jam. It'll probably say C1, which is 3.73 LS, although I just ran out to the garage to double check my truck, and it doesn't list anything on that sticker.

It might have it on the axle tag, but sometimes whoever serviced the diff last doesn't put the tags back on.

[precisionpowercleaning]

Everyone is right. Door jamb says c1 and tag says 3 L 73. I guess it's safe to say I have a 3.73 limited slip thanks everyone

[pup]

Does it work to jack up both back wheels and spin one by hand, if the other wheel turns the other way=open diff, if they both spin the same way=limited slip?