92redlx

What kind of plugs are you guy's running? I have a 347 with vortech 14 lbs setup. the car is running very good, but this morning i ran it in the quarter, and afterwards it was missing. I pulled my plugs and number 3 cylinder plug had the insulator ceramic loose and sliding up and down. The plugs aren't great, they are just autolite 3923. I will probably go with ngk tr plugs or the zex. That was the first run on the street with drag radials warmed up and revving at only 5200 rpm. The car turned 12.3 at 122.00 mph. Thanks for any info.

turbosha

i use the r43ts witch are 2 steps colder than stock. my plugs look new evertime i pull'em