Is there any difference in this tranny wether in a zr2 or s10 blazer. I have 2 4i60e`s and one of them has a zr2 stamped on the back of it, inside where it wont be seen once the tranfer case is on.

 

If they both have the closed in bell housing and both 4wd they should work unless theres year difference.If they are the same year either one should work.96`s and 97`s are slight different internaly but not enough they wont match.After 97 theres too much difference with more electronics inside the trans so that your pcm wont know what to do.

 

Thanks, helpfull but What I was wondering is, is the zr2 tranny tougher, beefier?

 

If its exteme editions yes otherwise I dont think so.