GM’s Biggest Engine Is The 8.3 Mongoose, And It Dethrones A Monster V8 From The 1970s

Gilbert Smith is an automotive journalist with over five years of specialized research and writing experience. Before joining CarBuzz in 2024, he produced in-depth buyer’s guides and feature articles for Vehicle History, focusing on practical insights and detailed automotive analysis.As the auto industry leans more and more into hybrids and small turbocharged engines, we’re happy to see that GM is still building big turbodiesel V8s.