Stopping the knock: Lower compression and ported heads...

This thread has my head hurting. After read ring and rereading this monster, I've gotta agree with Rusty. Compression wasn't the problem at all. Seems you've shotgunned the issue instead of trouble shooting. Sounds like you just need a good tune and check for vaccum leaks. I'm no professional engine builder but I did build my 472 stroker in my old charger. I was running higher dynamic compression than you and I was around 11.5 to 1 with my kit. I ran 93 octane without issue. I also was also running a slightly more aggressive Voodoo can than the one you're running. Listen to these guys, they helped me and weren't wrong.