Yes, It will bolt up to the bellhousing - However you're motor mounts will have to be re-fabbed or you'll have to buy the kit from AA. that adapts them to old style motor mounts. The vortec motor is about 1/5 inches longer then a regular small block, but it fits better under a firewall becuase the 5.3 doesn't have a distributor. There are some things you're going to have to do to the computer so the engine will rev. ( it'll think the trans is in neutral all the time)