does any any of you know?

will a LT1 and 4L60E fit in a 81 cutlass?

Heck yes it will. now thats what i call an upgrade. usually people put the olds 455 big block in them. so ur small block will fit like a dream. just make sure that if it came with a v6 from the factory ur gonna want to make a rear end gear change or u'll have no low end power.