This is topic What to use for spark plug on a 347 stroker in forum Tech Talk at Northern California Ford Owners  .


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Posted by kuku93 (Member # 14014) on :
 
HI i need some advice on choosing what spark plug would be most suitable for a 347 stroker. Thanks
 
Posted by Fostang (Member # 3752) on :
 
What kind of heads? What's the compression ratio any power adders ??? So much info missing to even give you somewhat of a response.
 
Posted by kuku93 (Member # 14014) on :
 
Dart Iron eagle 58cc heads
9:5.1 compression ratio. No power adders all N/A
 
Posted by Fostang (Member # 3752) on :
 
AR23 gapped at .036

https://m.summitracing.com/parts/atl-ar23

http://www.jegs.com/InstallationInstructions/300/301/301-13300080.pdf
 
Posted by kuku93 (Member # 14014) on :
 
quote:
Originally posted by Fostang:
AR23 gapped at .036

https://m.summitracing.com/parts/atl-ar23

http://www.jegs.com/InstallationInstructions/300/301/301-13300080.pdf
thank you!!
 
Posted by Fostang (Member # 3752) on :
 
Also depending on your ignition system you may be able to bring that gap up to .045 without any ill effect.

Do a little trial and error.
 




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