Don't brag too soon Jim. Just because you have had it running for three years doesn't prove that you have no detonation from burning too low of octane fuel. You may not hear it due to your headers. And keep in mind that even inaudible detonations can break the lands out between your piston rings. We have the same build but mine doesn't have zero deck. Mine never overheats either. I will keep adding some racing fuel just to be safe. Besides, I get better performance with the mixture. Remember that just because you zero decked it doesn't make it bulletproof.
