What kind of octane would I need if I had a 414 small block with aluminum magnums 13 to one compression XE 268 cam 4 degrees advanced 2200 stall and did all the little anti detonation tricks like carb heat insulators, intake heat insulators, air gap intake, coated pistons and chamber, 160 t-stat, fresh air to the carb and never went below 3500 ft elevation?
I could use my heads with bigger chambers but they are iron, they would give me 11.5 compression.
We have 93 octane here and I can get 110 octane gas pretty reasonable to spike it with.
I know it will build a lot of cylinder preasure and need high octane but how high is high in this caase?