Quote:
Originally Posted by johnta1
Those NGK's you posted are too long threads?
Something like R5670-5 would be the short threads I think.
I also liked the projected tip plugs for the heads.
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Those are gasket seat plugs. As mentioned, I have 6x-8 heads, which require the 14mm tapered seat plugs.
https://www.summitracing.com/parts/ngk-2298/
Here are the Autolite #26 plugs that were in the engine when I got it. They are 14mm, tapered seat, .460 reach, projected tip, resistor, heat range 6.
https://www.summitracing.com/parts/a...xoCU9kQAvD_BwE
What would be the advantage/disadvantage of projected tips, in my app ?