I'm finishing putting my engine back together and wondering if I can still get away with pump gas after the latest changes.

It's a 440 bored .055 oversize, .047” quench, ported Indy SR heads with cleaned up chambers, and a 260 at .050" solid roller on 108 advanced 2 degrees.

The car is 3800 lbs with driver, has a 4200 stall converter, 4.10s, 28" x 10" DOT meats and a 3" exhaust system.

I just ran the numbers for the compression ratio now that I have all the details and came up with right at 11:1. From what I saw in the past, it'll probably have close to 190 psi cranking pressure.

The local pump fuel is 92 octane (ROM+MON/2) w/ 10% ethanol. Is this going to work OK, or am I going to wish I'd gotten dished pistons instead of flat-tops to have lowered the compression? Maybe I just need to be extra careful about the ignition timing? It used to run fine with a little lower compression at 36 degrees total.