My 400cid 351 Windsor stroker is only running 9.2:1CR but it's pinging like crazy on the 85 octane here in Colorado. I've checked the gaps on my plugs and the points, retarded my timing so far back it's probably -4 initial (timing light doesn't go below 0). It STILL pings!!!! WTF!!!
I topped off with half a tank of premium and added a double dose of 108 octane boost. Pinging and dieseling gone, but NO BALLS. What the hell is going on?