19COBRA93
Ford Racing
Sam, is stock gap on a 07-09 GT500 .044" ? I'm about to change my plugs and coils tonight at home.
.044 will be fine stock, but up the boost any from that 8lbs, and I'd drop it down. I've been running .028 since I got this motor, but I was seeing 14lbs through the 2.9L from the start.