Dartin for Divorce

mpgmike said
Aluminum heads have the additional advantage of thermal dispersant capability; in other words, if you can run 10:1 compression with iron heads before you run into detonation, you can run 11:1 compression with aluminum heads on the same fuel, because the aluminum heads transfer more heat to the coolant jackets than iron.
Click to expand...

Oh I did not know that...

The worst part about aluminum heads is it will be expensive... not only with heads but then you have to think about taking advantage of the heads and the air they can flow... its a quick snowball... maybe my side job of porting cast heads will pay for the snowball lol.