High compression with aluminum heads and pump gas???????

Just had my heads redone , 11.4 :1 is now calculated compression ratio , EDELBROCK Alu heads , now closed chamber 55cc , forged Mahle pistons , comp 262 cam with 1.6 rockers . Will find out Thursday how it runs . Think I'm going to need 94 octane again , been running 89-91 octane before fixing the open chamber heads .