High Octane fuel in Illinois

stroked 340 said
Just my .02..my 416 with 11.9 to 1 compression ran just fine on 93 octane:thumleft::thumleft:

Is that with aluminum or iron heads?

My car also has about that same compression (x-heads). With super I can drive around just fine but I don't hammer on it.

My problem is the car is so loud I don't think I could hear if it was detonating.