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Please check this plug Please check this plug
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Kirkham Motorsports

 
 
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Old 06-05-2012, 03:25 PM
mreid's Avatar
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Join Date: Jun 2008
Location: Chester Springs, PA
Cobra Make, Engine: Kirkham 289 FIA #690, FRPP 427 Boss engine
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Default Please check this plug
Take a look at this plug and tell me what you think. 427w, Edelbrock performer rpm air gap, Holley 750HP. The engine runs great, but when I look at this plug (all others are the same) with 200 miles on it, it looks a bit lean. I think I need to richen the primary jet, but wanted some other expert input first. I know the pic is a little blurry.



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