spark plug recommendation

[Brian]

I'm running some early Edelbrock heads, looks like sparkplug reach is about 1/2". regular H10's are too short. Anyone know a suitable plug for these heads? Thanks

 

[tubman]

Delete

 

[19Fordy]

Brian: Peruse the info. on this Google search for: WHAT SPARK PLUGS FOR EDELBROCK HEADS?

https://www.bing.com/search?q=spark...DSAQkxMDY1OGowajSoAgiwAgE&FORM=ANAB01&PC=HCTS

 

[drolston]

NGK B-6L have a little over 7/16" reach and should work fine. Or if you want a little hotter plug, the NGK B-4L.

 

[Bored&Stroked]

There are a LOT more 7/16 reach plugs than 1/2" reach plugs.

If it was mine, I'd be making custom spacers (out of copper) to position 3/4" reach plugs exactly where you want them. There are tons of 3/4" reach plug options - which is why all the newer Eddy heads (and other brands) have switched over to 3/4" plugs.

 

[Brian]

Using this chart, I've figured i need NGK B6HS, which cross references to Champion L86C. These plugs have 1/2" reach.




https://www.ngk.com/ngk-spark-plug-numbering-systems