1989 Camaro with a Turbo Vortec 4200 Inline-Six This 1989 Camaro IROC-Z was built by owner Denny Villemure. Under the hood sits a 4.2 L Vortec 4200 inline-six with a Precision PT70GTQ turbocharger, 80 lb injectors, and PT1000 air-to-water intercoo...