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08-26-2016, 05:43 PM #16
The 10 is only the plug gap witch is .040. 140 and up compression should run 9 heat range to prevent possibility of detonation due to plug tip getting too hot. If the pz plugs fit in head gasket head with no interference then they will be good, I just know for a fact just be b plug works in a head gasket motor.
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