Alloy heads

Tinmannz said

Here's a good read for you. I figure the fellas at Trick Flow, Edelbrock, AFR, World Products and whomever else they quoted for this article probably have the knowledge, backround and expertise to commemt on aluminum vs cast iron cylinder heads.

Hopefully there's enough there for critical minds to think about while having their morning cup of 'joe'.
Or for some, their mid afternoon bottle of 'Iron City Beer'.

We all have our bias's and will always defend what works for us. The link below isn't an attempt to convince you from changing what works for you, but, to inform you what some reputable experts in the industry have found and are willing to share.

That's what I enjoy most about this forum, the different opinions on what works for some and not others. If it weren't for that, we'd all be stuck in the hamster wheel.

Take the time to read the following article and form your own opinion and remain open to others opinions.

Tinmannz out :)
P.S. Google is your friend

Performance Racing Industry

Click to expand...

I only defend what WORKS. What has worked. What is working. Not some manufacturer and his nonsense.

Want an example? This is a good one. Been some massive arguments by some on this very forum who THOUGHT they knew the right answer because A) it's in ALL the books and magazines (and the web...just read an article online about a month ago telling the same error!) and B) that's what they do. Doesn't make it right either way. So here goes.

If you are using a Holley or Hollye clone carb, and you are setting the power valve timing (opening point) you set it from CRUISE vacuum, not IDLE vacuum like Holley and all the book writers say to do. It's not only wrong, it's stupid and it makes getting the fuel curve from idle to WOT near impossible to get corner.

And yet and still, if you call Holley today, they will tell you to set the PV opening from idle vacuum. That is wrong. Period. End of discussion. Yet Holley and a multitude of others still teach that.

So just because a manufacturer says it don't make it true. Why would any of the above manufacturers want to make the effort to re-educate an entire industry? Why bother? Just like Holley it's easier to maintain the status quo than to admit you have been wrong. For decades. About your own product no less!

It's also a marketing ploy. None of those companies make a cast iron head. So why say it's equal in power output and cast iron can run the same CR?