It was replaced by the EcoTec3 5.3-liter V8 engine. The 5.3L LC9 Vortec is a performance engine at heart with only minor differences from GM's LS engine. The list of materials includes cast ...

GM kept the basic structure of a single cam pushrod ... We've seen LS swaps range anywhere from a few grand to well over $20,000. Are you starting with a shiny new crate engine or a used 5.3 ...