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Old 01-17-2011, 06:59 AM   #1
48fordconv
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Default Using NGK plug in my 48 Ford

Which NGK plug should I use in my 48 Ford with Edlebrock Alum heads?? Also what Gap should they be set at ?/ Thanks I had this written done someplace. Had car worked on they put Champions in.
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Old 01-17-2011, 09:24 AM   #2
flathead4rd
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Default Re: Using NGK plug in my 48 Ford

b4L or B6L I think the 4 is a hotter plug than the 6 (someone here will correct me on that if I have it backwards). Use factory plug gap. Maybe .028 to .032.
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Old 01-17-2011, 09:46 PM   #3
Jim Arnold
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Default Re: Using NGK plug in my 48 Ford

Steve, I'm using the B5HS NKGs that are a bit hotter than the B6s in my old Weiand 8.5:1 heads. NKG's lower numbers are hotter than the higher numbers. The HS plug is a bit longer reach (1/16") than the L and would probably fit the older Edlebrock heads better. My new Edelbrock heads require a 3/4" reach plug and I haven't yet found a plug recommended for these new heads.
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Old 01-17-2011, 09:52 PM   #4
uncle max
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Default Re: Using NGK plug in my 48 Ford

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Quote:
Originally Posted by Jim Arnold View Post
Steve, I'm using the B5HS NKGs that are a bit hotter than the B6s in my old Weiand 8.5:1 heads. NKG's lower numbers are hotter than the higher numbers. The HS plug is a bit longer reach (1/16") than the L and would probably fit the older Edlebrock heads better. My new Edelbrock heads require a 3/4" reach plug and I haven't yet found a plug recommended for these new heads.
NGK B5-ES are 3/4" length. Just right for Flatattack heads, and others.
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