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Discussion Starter · #1 ·
I dont know which spark plugs to get for my 306? Some guys on here say use the Autolite 25s and other people tell me to use the Autolie 3926s.
 

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Discussion Starter · #3 ·
I have edelbrock performer Rpm heads
 

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Discussion Starter · #5 ·
Ok thanks. Any other opinions out there?
 
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