Well, what do you think? Click on pic for gory details. I only pulled No. 1.
Plug wires themselves are pristine, are not in contact with exhaust and have heat shields to boot. These plugs only have only about 9,000 miles them from when the motor was put together. This includes tuning period which included many gnalry AFR passes. And yes, I run a small amount of Torco, Mach Fuel Accelerator.
These were not cheap plugs, AC Delco Iridium.