That's what I planned on. my "OEM" gam is supposed to be 0.045, with 20% being 0.009.
My question, though, is that I know I need to work with 1 cylinder to determine the ultimate gap for the other 7. In my case, however, I have 2 plugs for each cylinder.
Do I regap 1 until it misses/hickups, or do I regap both for that cylinder until a miss?
I don't know if that will ... never mind. I just found some more information explainging why the hemi has 2 plugs. I thought it was some kind of timed firing for better HP/performance. Actaully, it's only 1 firing on the upstroke, the 2nd first on the downstroke. It's evidently for emissions, not performance.
So, if I can figure out which one fires on the upstroke, that's the one I should mess with.
Thanks!