I Have Changed The Tranny Mount On My 94 Z And The One I Changed Was Torn In Two Pieces So I Bout A New One Installed It And My Shifter Still Rises About 2 Or 3 Inches When I Step On The Gas. Is There An Upper Tranny Mount???? Also When Ever I Step On It The Rear End Knock Hard On Frame On The Rear What Could That Be???

 

You may have already done this but, check the torque arm assembly. Look particularly at the bracket assembly @ the trans. The bracket has prob fell apart or has come loose (it does come apart). If ok torque back to 37lb ft for the long bolts (2) and the short bolt (1=outer bracket bolt/screw) to 20lb ft, IF NOT replace. If you have had these parts off check assembly for mistakes then follow to all major brackets/mounts. Make sure trans mount is correct for your application!!

 

Thanks I Try That