It really is gonna depend on how much you are going to spray. Start out with the NGK TR6, that's good up to a 150 shot. Above that you might need a colder plug. You can get them at Advanced Auto for about $1.75. They will have to order them, so order them over the phone, ask for Jeff. Good luck.

 

I run 103 on a 150 shot with no problems, NA time didnt change a bit.

 

Autolite 104's gapped at .039 with a wet 100 shot.

 

Thanks for all the help guys....and Harold i'll make sure to talk to jeff and tell him you sent me in...thanks again everybody

 

Platinum plugs and N2O or a blower are a big no-no! I run the coldest non-recessed tip NGK that fits my AFR heads (they are an "11", five and a half heat ranges colder than stock).

Rich Krause