Hey everyone. I have a 95 5-speed with a 331 stroker with 10-1 compression with GT40P heads and TFS intake and cam. I have NGK TR4 plugs and I cant get it timed right. They are the coldest plugs that NGK has for the 302. I have tried every timing setting from 8-14 and it pings at no matter what I have it set at. I have also tried one step hotter plugs earlier and it still pinged. What plugs should I use for this motor? I dont care what brand and I don't want fancy platinum ones either. Any help would be great. Also if anyone knows how they rate plug temps let me know.