hi guys, i was wondering if a ac condenser from a 92 s10 will fit in a 96 blazer both with a 4.3

 

I dont have one to comapre, but did the 92 use r-12 or r-134a? If they used different refrigerants, they wont swap.

 

No. Not even physically.

Replacement part numbers are different.
Rockauto.com catalog is excellent for finding out stuff like this. Just open it in two different tabs, one for each model.
* Note that even some same models cant be used because they are parallel flow and cannot be flushed.