Flathead ford spark plug choice

I'm running a flathead 8BA with aluminum Edelbrock heads. I am wondering what sparkplug might be the best choice for this set up. I[ve been told that the champion #271RC12YC would work but Im also running an Isky Max 1 cam and dual Stromberg 97s. Any input? Thanks.

 

dont buy a champion, back in the day they were great... now they are terrible.. my flatty hates champions. i run NGK's in mine and also autolites/motocraft.. i cant remember the number off hand though

 

Champions only seem to work well in lawn mowers these days. I stopped using them for anything else back in the early 80s. Unless you can find some NOS ones I would use some other brand.


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I have virtually the same set up only I have holley 94s. I use the NGK BL 6s.

 

Thanks the NGKs seem to get the most votes. I was told the plug has to clear the aftermarket heads but this may or may not be an issue.

 

I've ran champion sparkplugs HC 10 since 07 till today. I haven't had any trouble with them. Maybe its just good luck..But the heads on the 39 are stock..

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Yes to NGK; H10 is also too short a reach, to put the electrode onto the combustion chambers. Be sure to check that, and NGK has correct reach plugs close to the H10 heat range.

Happy Roddin', 4TTRUK

 

Autolite 216s are perfect length for aluminum heads.Its what i have used and it runs perfect

 

Thanks......I'm adding that item to my info book.


4TTRUK

 

Autolites are now made in China

 

NAPA, get equivalent plug in NipponDenso, lasts forever.