[Miket]

Originally Posted by fastco

Hello if your engine is old style Chevy 350 / with iron GM heads ( 5/8 th plug type) we find AC44TS seem right on target for heat range eg 300/ 400 BHP range . Differant story if your use'n Ed heads or Cants , Bodix , Partriot ect ect... on Champion plugs... sorry i've removed 100.s of sets due to miss fire problems & low life expectantcy till miss fire occours.
In perf engines.. Champs okay for weed wackers & lawn mowers... maybe?
I am testing new NGK Iridium spark plugs now in 300 to 550 BHP street driven cars, they are latest in plug tech from NGK... all the votes are not in yet but looks promising so far.

On trick plugs with 2 & 3 & 4 electrodes , and dilithium crystal impregnated electrodes & cryogenicly heat treated centre electrodes ect ect... no gains i've seen... due to electricty taking shorted & easy path always & electric arcs do not split @ spark plug centre electrode & cause a lighting bolt fire storm @ the tip of your plug as advertizments would leed to believe... i think the word is bollucks is the Brit term ... cross the pond it's BS...

My 2 pence / cents... cross the pond...

Mine have been in the motor for 10.000 miles without a single problem. speaks for its self, I think.

Champion Copper Plus RV 12 YC