Is this engine knock ?
I ran pump gas in my 12.2 to 1 motor on dragweek. Cast iron heads. Quench? None of that here! Thought I would need to adjust timing for the on road portion. Nope, I babied, I mean really drove it like it had an egg under the throttle. I would very gradually get to traffic speed. THE MOST BORING RIDE EVER!! No issues though. I think it would be hard to get it to knock without a load.