Which sparkplugs to choose

[Jeanyus]

Which sparkplugs should I use.
I have a 427 Chevy, rectangle port closed chamber heads, Crower solid lifter cam, 10 to 1 compression, tunnel ram, 2 750's, Mallory Unilite, 50,000 volt coil. It curently has autolite AR 135 racing plugs.
http://www.hotboatpics.com/pics/data/500/5859cfw.jpg

[FASTRAT]

Which sparkplugs should I use.
I have a 427 Chevy, rectangle port closed chamber heads, Crower solid lifter cam, 10 to 1 compression, tunnel ram, 2 750's, Mallory Unilite, 50,000 volt coil. It curently has autolite AR 135 racing plugs.
http://www.hotboatpics.com/pics/data/500/5859cfw.jpg
thats a good plug...thats what i run in my 427 with lg oval port heads...sgl re-worked holley 750cfm...mag ign & OT headers...they tend to load up a little if ur idleing around...but clean up fine upon acceleration...depending what ur doing with the boat?...that plug might be a little cold...u could go 1 or 2 heat ranges hotter!...just my .02 cents
fastrat