41-985 iridium Ac Delco spark plug gap?
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From: Iowa
41-985 iridium Ac Delco spark plug gap?
Installing new plugs and wires and wanted to make sure I've got the correct gap. Service manual states .060 for the stock plugs but not sure if the iridiums are pre-gapped correctly out of the box (the 41-985s' all measure approx. .040 )
As a side note, I was impressed by the low resistance readings for the MSD 8.5 mm super conductor wires I'm putting on. They all measured between 26 and 27 ohms on the meter. The stock wires ranged 316 to 347 ohms, which is still quite good for OEM wires.
Thanks, Steve
As a side note, I was impressed by the low resistance readings for the MSD 8.5 mm super conductor wires I'm putting on. They all measured between 26 and 27 ohms on the meter. The stock wires ranged 316 to 347 ohms, which is still quite good for OEM wires.
Thanks, Steve
Last edited by srwelsh; Feb 25, 2005 at 11:30 AM.
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Joined: Nov 2000
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From: Arroyo Grande CA
the 41-985s' all measure approx. .040 
Do not re-gap. Per AC Delco site.
http://www.acdelco.com/html/catalog/index.htm
Do not re-gap. Per AC Delco site.
http://www.acdelco.com/html/catalog/index.htm
