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Spark plug gap for 350 Chevrolet?

The recommended spark plug gap for a Chevrolet 350 engine depends on the year and specific engine configuration. Here is a general guide:

1. Older 350 engines (pre-1975): 0.035 inches

2. 350 engines with HEI (High Energy Ignition) systems: 0.045 inches

3. Performance 350 engines: 0.050 inches

It's important to refer to your vehicle's owner's manual or a reliable automotive source to confirm the correct spark plug gap for your specific 350 Chevy engine.