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351M spark plug gap?

 
  #16  
Old 04-20-2019, 09:33 PM
TXTrailerdaddy
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Not to hi-jack the thread, but I'm running the HEI distributor. Any idea where I should gap mine?
 
  #17  
Old 04-21-2019, 09:20 PM
66point6
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Originally Posted by TXTrailerdaddy View Post
Not to hi-jack the thread, but I'm running the HEI distributor. Any idea where I should gap mine?

I would gap those plug regardless of engine and distributor @.53 From what I have read most of the retarded de stroked engines use low gap only to meet emission standards,but they still perform better burning more fuel than a lower gap.
 
 
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