The Ford Barn

48fordconv · 01-17-2011, 06:59 AM

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.

flathead4rd · 01-17-2011, 09:24 AM

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.

Jim Arnold · 01-17-2011, 09:46 PM

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.

uncle max · 01-17-2011, 09:52 PM

Sponsored Links (Register now to hide all advertisements)

Quote:

Originally Posted by Jim Arnold

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.

01-17-2011, 06:59 AM	#1
48fordconv Senior Member Join Date: May 2010 Location: Portland, ME Posts: 132	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.

01-17-2011, 09:24 AM	#2
flathead4rd Senior Member Join Date: May 2010 Location: Michigan Posts: 505	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.

01-17-2011, 09:46 PM	#3
Jim Arnold Junior Member Join Date: May 2010 Location: Pittsburgh, PA Posts: 11	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.