Thread: Best NGK for hi-po 396?
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Old 06-23-2017, 05:09 PM
Salvatore Salvatore is offline
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Sam, there are a box of Holley Plugs on Ebay. Holley plug #25-31. They should work. If you can find 25-30, better yet!

25-57 and 25-41 are the projected tip. Been running the Holley's for years with good results.
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