Rear diff ratio Q

[dvmotorsports]

I found a LSD today but the tag was cut off. Somebody told me to count the rotations to get the ration and I did. But it makes no sense to me.

Axle Rotation-3
D/S Rotation-12 or 13

Anybody know what this might be? I didn't get the PN because it was covered in gunk. Gonna go buy it either way, just wanted to figure out the ratio before hand.

TIA

[scott_is]

Just do the math...
DS/axle spin=ratio

Scott

[h82crash]

What is it? 12 or 13? Either way, it's probably a 4.10. Cool if you don't drive on the freeway.