I bought an assortment of V8 conversion parts from a local guy and the following numbers are on the diff 21992547. It is marked as 3:73 ratio. I have seen posts that the 3:73 is not the ratio to have. Does anyone know whether I have limited slip? I have not been able to find anything definitive on a Google search.

Thanks,

Jeff

 

Looks like a CTSV part number which means it does have posi aka limited slip. Depending on the goals and set up some like the 3.73 and others rather the 3.23, still others split the difference and go for the 3.42.