what plugs for 383

[moparjohnny]

hi po street eng.9.5 compression.mild cam. champion seems to foul out quick. thanks

 

[directconnection]

hi po street eng.9.5 compression.mild cam. champion seems to foul out quick. thanks

I use ngk r5670-7
or ngk r5670-8 with good results in an iron headed motor

 

[lewtot184]

quick "fouling" indicates a tune-up or major engine problem. if this is the case, then plug type/heat range/ or manufacturer may make no difference.

 

[directconnection]

post a pic of one of your plugs
What carb are you running