TBI long block VS Vortec

[schwinnman67]

I have a 92 K1500 that the engine is a bit tired on. My friend has a Vortec long block (crate engine) that he might sell to me. Can I use this? What is the difference between them (other than the heads)?

 

[Erik the Awful]

https://www.gmt400.com/threads/how-to-put-a-vortec-motor-in-a-tbi-truck.49463/