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Thanks to big cubes and big heads, the 455 Pontiac produces incredible horsepower output from just 12.5 psi of boost on pump gas. Brian says the combo will easily make 1,400 to 1,500 hp with the twin 66mm turbos cranked up full tilt. The muted black-and-silver color palette carries over to the engine bay. Even minor bits and pieces like the fuel pressure regulator, valve covers, wastegate, and blow-off valves are all black. View Related Article
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