How do you determine what spark plug to use? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

dan468 · 08-01-2010, 10:44 PM

How do you determine what spark plug to use? I have a 454 and not sure what process I would use to determine what "heat range" I need to purchase for spark plugs.

Thanks!
Dan

dwcsr · 08-01-2010, 11:35 PM

Start with what the book calls for. Run it for a while and look at the plugs.

Then compare with this chart
http://forums.genvibe.com/zerofile/1...park_plugs.jpg

08-01-2010, 10:44 PM	#1
dan468 Registered User Join Date: Nov 2006 Location: Sun City, Arizona Posts: 430	How do you determine what spark plug to use? How do you determine what spark plug to use? I have a 454 and not sure what process I would use to determine what "heat range" I need to purchase for spark plugs. Thanks! Dan __________________ 68 C-10 Build thread http://67-72chevytrucks.com/vboard/s...d.php?t=414699

08-01-2010, 11:35 PM	#2
dwcsr Hollister Road Co. Join Date: Apr 2005 Location: Houston Posts: 6,134	Re: How do you determine what spark plug to use? Start with what the book calls for. Run it for a while and look at the plugs. Then compare with this chart http://forums.genvibe.com/zerofile/1...park_plugs.jpg



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