I have an 82 chevy C20 I put a 1.5" lift blocks on the rear now the driveshaft has pulled apart at the carrier bearing about an inch...will this hurt anything truck drives fine...

 

That shouldnt cause any issues, but check for "slop" b/c it could vibrate a little. Or space your center carrier bearing down 1 1/2" inch. Washers, flatstock, or even barstock of the same thickness will work. That will take it in the inch it came out, and ease your mind.