Thread: Spark plug life
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Old 02-16-2017, 12:09 PM
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i82much i82much is offline
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Quote:
Originally Posted by Blued and Painted View Post
With a dialed in carb and tune, I would think 15K+ miles is possible with an HEI. Multiple Spark Discharge may reduce plug life?
Gosh maybe, I don't know. I ran an MSD for a long time and I don't remember seeing any electrode wear to speak of. But it was a long time ago, and I used to change spark plugs just to pass the time, so maybe I never ran them long enough to see.

I was thinking more like 50k if you pulled them out and cleaned them every once in while!