The recommended spark plug gap for a Chevy 4.3L engine (also known as a Vortec 4300) varies slightly depending on the year and specific engine specifications. However,
a gap of 0.040 to 0.045 inches (1.02 to 1.14 mm) is generally considered the standard range.
Always consult your vehicle's owner's manual for the precise specification recommended by the manufacturer for your particular year and model. Using the incorrect gap can affect engine performance and fuel efficiency.
