Spark plug gap for a 1991 Chevy Silverado 1500 5.7 liter V8.?
The recommended spark plug gap for a 1991 Chevy Silverado 1500 with a 5.7L V8 is 0.045 inches (1.14 mm). However, always double-check your owner's manual or a reputable repair manual specific to your vehicle's year and engine for the most accurate information. The gap might vary slightly depending on the specific spark plugs used.