In MY EXPERIENCE aluminum heads don't help on octane need at all.
You are going to NEED 34-36 degrees total. 10.5:1 is PROBABLY the absolute limit to run with 93 octane gas.
Octane need is determined by the cylinder pressure. That is more closely related to static compression ratio than anything else.
Bleeding off compression through the exhaust timing does nothing in this engine. It simply does not work.
You also NEED to decide the nature of the engine that you want. That is mostly in the camshaft timing.
Although I like the timing on that cam, your cam, I don't use my car in any kind of an "every day" situation AND I wouldn't necessarily recommend my specs to anyone else.
I actually run a little more cam than yours but the end result is very similar. It's a lot of cam for the street and to make it work, you will need to deal with other factors as well such as putting in headers that actually work with that cam. That is not as simple as it sounds. PROBABLY 180's.
Your cam is very close to a race cam, mine too, but it is a cam that can be run on the street.
You do not want to have to row the car through bumper to bumper with it. No no.
If you are not suicidal now, you might become it being in traffic with it BUT it is very difficult to have a Pantera idle like a 428 Thunderbird, then run with 427 Cobras on the track.
You need to compromise one way or the other. Mild or wild.
I will say that if you get the opportunity to drive on an open track at WOT with it, you won't want to come off of the track. That kind of balances out the suicidal thing...sometimes?
