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Trying to find out what would be a good spark plug to start with and gap setting for my setup.

STock block 347
9.2:1 compression
AFR185 Heads
CHP sypder EFI intake
F-cam
PTS street kit with A/A intercooler looking to run 10-15psi.
5 speed car

If any more information is needed just let me know.
 

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plug gap depends on what ignition your using. i dont now what style plug those heads use but i use r5671a ngk plugs. i use 8 heat range. i would start with a 9 if possible and see if it fouls out the plug. you will probably end up with an 8 but 9's are less likely to cause detonation. without knowing you ignition i would say start around .025. i have a 6 series box and do .028 and didnt blow spark out at 40lbs boost.
 
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