The Vortec 4200 was used in General Motors' midsize SUVs ... as a show of force and a test of reliability. While the twin-turbo concept only made it to the prototype phase, it propelled the ...

Thanks for asking, though, says a Trailblazer tuner. Although the Trailblazer still carries a Vortec 4200 engine, its factory straight-six has been turbocharged to produce 1,004 horsepower to the ...