bent3

what plugs do you think are the best to run in a 331 supercharged

mjr46

depends on the heads you are running and the plug the manufactorer reccommends..and boost level will also be important to know

bent3

trick flow heads 5 to 10 boost it has autolite 3924 but im not all that fond of autolite i would like to change to somethimg different or what ever is better my heads are o ringed track heat i beleive

mjr46

well if you don't like autolites I don't know what to tell you cause IMO they are some of the best to run in a sbf...if you have a good high energy ignition system then with boost of 10 psi you could if desired go to a 3923...which is what I'm gonna do on my 347 when spraying a 125 shot

Mustangkiler

Im running ngktr5's in a 10 psi non intercooled kb 302 which crosses over to a 3924, ngk v groove and denso u grooves were recomended by my tuner and kenne bell.