Thread: what spark plugs?
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Old 10-12-2009, 10:31 PM
  #4  
Tod74
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RACING JUNKIE
 
Join Date: Sep 2007
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if using AC Delco I always ran R45 or R46....NGK I use 8'sor 7's.

I'd use whatever one allowed it to idle the cleanest since it's a street car.
jmo
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