Which plug to use?

[gdr8]

I have a Mallosi big bore motor with a analog Pvl ignition, which spark plug should I be using?
I currently use a b8 something, and have heard lots of different opinions.
What's everybody else using?

[Christiansdad]

well i say run the high dollor plug a br9eix..i guess...day dreaming one day and went to the gforcepowersports website to see how much the big bore build a kit was..that plug was listed for the 2 fast kits,big bore.etc....but hey it was 5,200 to build a brand new 90 motor with the best of the best stuff made today...lol

[dewutfan]

just as he said run the br9eix plug.. i got that kit and thats what Gary at Gforce says to run and we have not had a problem...