![]() ![]() In the mid-1990s, the Chevy 4.3L Vortec engine phased out its car lineup, and it continued production for only pickups, vans, and sport utility vehicles. The second variant, known as LB4, featured several changes to increase power and was expanded to power Chevrolet Silverado and GMC Sierra trucks. However, it was modified with a different injection system for use in General Motors cars, such as the Chevrolet Caprice, Chevrolet El Camino, and Pontiac Grand Prix. It was featured on Chevrolet and GMC full-size pickup trucks and vans. The first variant, known as the LB1, lasted only one production year. There are some notable variants of the Chevy 4.3L Vortec engine line. The vortex enabled the engine to produce more power while still gaining a marginal amount of fuel efficiency. The Vortec technology name came from the word “vortex,” because General Motors designed the engine to create a pressurized swirl, like a mini-tornado, within the combustion chamber to efficiently blend gas and air together. They were featured in Chevrolet and GMC full-size trucks and vans. The second group of Chevy 4.3L Vortec engines launched in 2014 came with more power and better fuel economy. Earlier model year engines dating before 2013 were featured in sports cars and trucks, and they provided vehicles with 155 horsepower and 230 pound-feet torque ratings. There are two distinct engine models, which transitioned in 2014 for modernization. ![]()
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