Change timing to run 91 octane with 12:1?

AJ/FormS said

FWIW, I run my 10.7 -360 on 87E10(aluminum heads). Always have . 223/230/110 cam, or 230/237/110, same results.With iron heads, and 10.0,you should be good on 89/91, depending how SMALL your cam is.Feel free tp PM me.

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I just ran it this weekend and it was pinging a bit on Shell 91, last summer I filled it at the same station all summer and did not have any problem so I was going to just run AV 50/50, I don't want to start changing the timing or messing with things as the car runs good and only pings under full load.
Cam is a Crane 691191 solid 480 238 int 500 248 in a 9.8:1 340