Specifications
The Vortec 4200 4.2L inline-6 engine is an advanced all-aluminum DOHC powerplant featuring a 4.16-liter displacement, four valves per cylinder, and variable valve timing on the exhaust cam for improved efficiency and power. It uses electronic throttle control, coil-on-plug ignition, and sequential multi-port fuel injection, delivering smooth performance thanks to its naturally balanced inline-six layout.
Depending on the model year, the Vortec 4200 produces around 270–291 hp and 275–277 lb-ft of torque, with a 10.0:1 compression ratio and a wide, usable torque band. Known for its refinement and strong mid-range pull, it powered GM midsize SUVs like the Chevrolet TrailBlazer, GMC Envoy, Buick Rainier, Oldsmobile Bravada, Isuzu Ascender, and Saab 9-7X.
Compatible Engines
Chevrolet TrailBlazer
The Chevrolet TrailBlazer is a well-rounded compact SUV powered by 1.2L or 1.3L turbocharged engines delivering 137–155 hp and paired with either a CVT or 9-speed automatic transmission, available in both FWD and AWD for added versatility. It offers a spacious five-seat interior with flexible cargo space, modern infotainment with large touchscreens, smartphone connectivity, and advanced safety features like lane-keep assist and automatic emergency braking. With fuel efficiency around 30 mpg, a comfortable ride, and a bold, sporty design, the TrailBlazer balances performance, practicality, and everyday usability, making it a strong choice for city driving and light adventure.
GMC Envoy
The GMC Envoy is a mid-size SUV produced from the late 1990s until around 2009, known for its body-on-frame design, comfortable seating for up to 7, and rugged utility. It was available with a few engine options over its production run: typically, an inline-6 4.2 L engine producing about 275–291 hp and around 275–280 lb-ft of torque, and a 5.3 L V8 producing roughly 290–300 hp with around 325–330 lb-ft of torque in V8-equipped models. These engines are paired to a 4-speed automatic transmission (Hydra-Matic), driving the rear wheels or available with four-wheel drive depending on the configuration. The Envoy offered solid towing capability, decent cargo space, and traditional SUV reliability for its era.
Frequently Asked Questions
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What vehicles use the Vortec 4200 engine?
It fits models like the Chevy Trailblazer, GMC Envoy, Buick Rainier, and Oldsmobile Bravada from 2002–2012.
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Is this a used or rebuilt Vortec 4200 engine?
Tagore Auto Parts offers tested used engines with OEM specifications and verified performance.
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Does the Vortec 4200 engine come with a warranty?
Yes, every used Vortec engine includes a standard parts warranty for peace of mind.
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How reliable is the Vortec 4200 engine?
Known for its strong inline-six design, it delivers excellent reliability and smooth operation over high mileage.
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Is the engine ready to install?
Absolutely. Each Vortec engine is tested, cleaned, and ready for direct installation.
Chevy Vortec 4200 Engine