I would correct the air fuel ratio first, jetting or fuel map, to stop the plug fouling first and go from there I've used all three brands of spark plugs with good results with all of them On your deal with Autolites on the street I would start with Auolite # 3924 resitor plugs or thier # 3911 non resitor race plugs IHTHs
Last edited by Cab_Burge; 02/13/1608:46 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
I've used all three brands of spark plugs with good results with all of them 
On your deal with Autolites on the street I would start with Auolite # 3924 resitor plugs or thier # 3911 non resitor race plugs 
IHTHs
