blue thunder heads spark plug size ????

[atxwrangler]

i am putting a set of used bt heads on my blown 460,does anyone happen to know what spark plugs they use?

[RiverRacer]

i am putting a set of used bt heads on my blown 460,does anyone happen to know what spark plugs they use?
Depends on the rest of your combination. Champion C57CX will work as a baseline. So will Autolite AR3924. I use Champion C59CX, but I'm normally aspirated. If 57 is TOO cold, you might try 59's. They will live for about a day just playing around on the River or Lake. RR