Quote:

---

mr p i'm sorry i great respect for you ,,
but this is just plain outright b s ,
as i have posted before, you cannot gain up to 10 hp
over any plug by autolites, plugs,,
not unless that plug not firing, or is in the wrong heat rang
indexes is not what it all is either, yes min gain and the work to do it , yes some motors you have to index,
sometimes yes 7-10 hp doesnt take alot for a motor to pick that up,
air quality, wind,
when its on a dyno, and that statement comes out i will go back
and say, that the plugs are bad, just as a set of wires can have to much resitance and have the same effect,
other than delivering the ign to fire that cyl, thats what the plug will do
my testing has come from the track,i have used 100s of plugs ,at the track & on my own, i have used autolites, motorgraft, ngk champion, bosch, ac delco, i have yet to see any plug, pick up over the other !
i have run gas and now alcohol, i have change plugs at will, on both
yet to see even so much as a hundreth of a pick up,
if a guy has a gas fouled , oil fouled ,etc plugs yes he will see a pickup yes even on a dyno,

---