FYI
11/1 and pump gas dont mix, round here our premium is 93 W/ 10% ethanol added and I still wouldnt run it in a 11/1 motor.
I had 396 BBC that was 11/1 > I ran a 50/50 mixture of 110 leaded race fuel and 93 pump gas, worked fine that way.
Don't fool yourself into thinking it's ok to run pump gas in a 11 to 1 motor> ping or no ping, its gonna give your problems somewhere down the line.
JMO~Cp