ProComp/Speedmaster aluminum heads
^^to put it nicely.... LOL... So I'm just using general logic. I'm open to more science. Please explain. I can say I know balloons lose pressure in the freezer and they shrink. I can say tire pressure is less in the winter than in the summer. So why wouldn't aluminum heads, which dissipate heat faster not drop the cylinder pressure??
I did that. I screwed up and did it in a existing thread and couldn't finish it. Why you ask? Because it always (I don't care the topic, name any topic...politics, religion, sex, money, food, carburation...whatever) takes 50 times more work to refute an error than it is to say it.
For example...you can run 1-1.5 points more compression with aluminum heads then you can with iron.
One short sentence. If I reply the head doesn't know what it's made of, which is no different that the statement you make won't suffice because you don't accept it and say you want "science". Then I ask what "science" do you have to support your presupposition?
I have over 30 years of actual doing it to back me up. I've been running big (big is a relative term) compression on pump gas on iron heads and can tell you, it doesn't matter what the head is made of.
Now, back to the "science" you want. Like I said above, I started doing that but the typing literally made my hands swell up. That's how much it will take for me to explain the "science" to you. I think I had 4, maybe 5 posts in that thread that were at least AJ length posts. So if you think about it...that's a TON of typing. And my RA just doesn't tolerate that much typing.
If you can find that thread over in the small block forum put it at the top and I'll finish it.
But the "science" says head material doesn't matter regarding compression ratio.
