Questions about quench, dynamic compression, and 91 octane gas.

I have a smaller comp solid (274-S) with 9.7:1 measured with edelbrock heads and .040 quench in a 416”

I run 91 octane California spec gas

I think you’ll be fine with 9.8:1

There’s a bunch of calculations, but they don’t take in account absolutely everything. You need to put it together and see what happens. You can fine tune with total and mechanical advance curves