What's the appeal of an aluminum engine block?

[fordracing65]

Originally Posted by RodKnock

I'm a statistical analysis kinda guy with real world data, independent and dependent variables, etc. Once you have the study setup with multiple FE engines, both cast iron OEM blocks, Shelby, Pond, BBM, Side Oiler Garage aluminum and cast iron blocks all with the same parts but for the block and related pieces that go with the block and then run them all on the same dyno in the same atmospheric conditions and if the various alloy blocks make a statistically measurable difference in HP, then and only then will I believe it.

Otherwise, just theory, chemistry sets and hot air. Until that happens, I don't want to hear about books and hearsay. No "get of jail card" necessary. Thank you very much.

It's been done before, but not at the same time. Barry has built a motor with an iron block at got x amount of hp. He has defiantly built the same motor using the same parts but with an aluminum block. And got different hp numbers. Atmospheric measure can as well be the same. I'm sure he measures and monitors that when he does dyno pulls. I bet Blykins has built hundreds of FE motors and with the same parts but different blocks under the same atmospheric conditions but on different days. I don't think the idea that it has to be done at the same time means that much. So let's just say it has been done by many builders of FE's. And each time they say iron makes more power.