Hey Robert, Long time no see!
It doesn't ping with 38 degrees timing which is good. I raced both with mufflers and by taking the whole exhaust off and I gain .35 ET and gained 4mph, I was shocked to see that. But this engine/trans came out of a duster that was running 11s@119mph at my same track. I think the induction system is restricting it as well as me not using the trans brake. I will be using the trans brake next year!