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Old 08-15-2011, 05:04 PM
  #2  
482
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Join Date: Mar 2003
Posts: 337
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I like the NGK plugs! JMO
I think NGK TR5 is stock replacement for gas. I think they have TR55 and TR6 for different heat ranges. May give you something to start with.
Some of the other fellows could help better on the small block stuff, I run 8's in a gas BBC
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