modern spark plug

Duco55

Active Member
May I start with wishing everybody a very good and healthy 2015!

Is there somebody who has an advise on what sparkplugs are best on a 263?
I have a set of AC DELCO R45, but I am not sure about them. They seem to have resistors but the ones advised by reseller sites also have them.
any tip appreciated
met vriendelijke groet
Duco
 
NGK XR5. gapped to .035" ran since June 2014. running great. 263 12V pertronix. milled head .035", 4 barrel carb.
 
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