Need help picking a hot spark plug.
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Joined: Jul 2003
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From: Ontario
Need help picking a hot spark plug.
I am currently running a NGK R5671a7 and need a hotter plug. I have a 388 with Dart pro 1 heads running 10.8:1 compression with a mini ram set up with SLP headers and need a small plug to avoid the boot touching the headers.
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