However, a common range for a 1971 Chevy 350 is .035" to .045".
To find the most accurate specification, you should:
* Consult your owner's manual: This is the best source of information.
* Check the spark plug box: The packaging of the spark plugs you're using will often specify the recommended gap.
* Refer to a repair manual: A Haynes, Chilton, or factory service manual for your specific year and model will have this information.
Don't guess. Using the wrong gap can lead to poor performance, misfires, and even engine damage. Always measure and adjust the gap accurately using a spark plug gap tool.
