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» Northern California Ford Owners     » Automotive   » Tech Talk   » What to use for spark plug on a 347 stroker

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Author Topic: What to use for spark plug on a 347 stroker
kuku93
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HI i need some advice on choosing what spark plug would be most suitable for a 347 stroker. Thanks
Posts: 154 | Registered: Apr 2015  |  :
Fostang
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What kind of heads? What's the compression ratio any power adders ??? So much info missing to even give you somewhat of a response.

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67' Fastback TT 408
67' Camaro Lsx
64' Corvette Fuelie
57' Chevy Bel Air Lsx
68’ Pony Convertible
66’ Pony Coupe

Posts: 3011 | From: Stockton/Danville | Registered: Nov 2003  |  :
kuku93
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Dart Iron eagle 58cc heads
9:5.1 compression ratio. No power adders all N/A

Posts: 154 | Registered: Apr 2015  |  :
Fostang
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AR23 gapped at .036

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

http://www.jegs.com/InstallationInstructions/300/301/301-13300080.pdf

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67' Fastback TT 408
67' Camaro Lsx
64' Corvette Fuelie
57' Chevy Bel Air Lsx
68’ Pony Convertible
66’ Pony Coupe

Posts: 3011 | From: Stockton/Danville | Registered: Nov 2003  |  :
kuku93
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Member # 14014

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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!!
Posts: 154 | Registered: Apr 2015  |  :
Fostang
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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.

--------------------
67' Fastback TT 408
67' Camaro Lsx
64' Corvette Fuelie
57' Chevy Bel Air Lsx
68’ Pony Convertible
66’ Pony Coupe

Posts: 3011 | From: Stockton/Danville | Registered: Nov 2003  |  :


 
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