Ultimate 4.3 Vortec Performance Parts Guide
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Ultimate 4.3 Vortec Performance Parts Guide

For more than three decades, Chevrolet’s 4.3 liter V6 engine, also known as the 4.3 Vortec or Vortec 4300, powered a variety of trucks and sedans across the Chevy and GMC lineup. These ranged from trucks like the Chevy S10, Silverado, and Avalanches, to muscle cars like the Chevrolet Monte Carlo, El Camino, and Pontiac…

Chevy 4.3L Vortec Common Engine Problems
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Chevy 4.3L Vortec Common Engine Problems

The 4.3 Vortec suffers from common problems such as ICV valve and TPS sensor failure, intake manifold leaks, distributor failure, port injection leaks, engine knock, and excessive oil consumption from AFM. In this article we are going to dive into each of the common problems in detail as well as discuss overall engine reliability of…