Classic Engine Tech 1967 - 1981 Engine Related

spark plugs

Old Mar 14, 2005 | 02:47 PM
  #1  
305fan's Avatar
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From: Calgary
spark plugs

What kind do you use?

I was thinking of going NKG Iridium plugs on my 74 Formula. I really want them to last a long time befroe I hae to change them again.
Old Mar 20, 2005 | 01:59 AM
  #2  
canuck94z28's Avatar
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Joined: Feb 2005
Posts: 518
Re: spark plugs

i put ac delco rapid fire in my 79 z and their definitely better and last longer than plain ac delcos.
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