Speed Academy toured GM’s Tonawanda, New York engine plant to see how the 650-horsepower LT4 V8 — the most powerful engine General Motors had built at the time — comes together on the line. It’s less a robot showcase than a portrait of the people who build it, several of whom show up in the comments with decades of their own history at the plant. The video even flags its own footage: the crankshafts shown mid-tour are for the 5.3-liter EcoTec3 truck engine, not the LT4. Watch to see where a Z06’s heart is actually made.