Cast Iron Canadian Heads Question

AND rodders immediately fell in love with the shiny! (Quote)

Oh yes, I can still remember the first set I saw... and the FINS, now they were sexy.

Thank you for getting a little deeper into head characteristics. Some aftermarket heads (Federal I think) were cast in bronze, I'm not sure if they were a high performance design or simply cast in a material resistant to the common corrosion problems.

Smokey Yunick sounds like a very interesting man, that kind of original thinking inspires me, and when things work out right great leaps in knowledge occur to the benefit of all.

Do you have any knowledge on the bronze heads and their chacacteristics. My thinking here is that bronze may be the ideal material, it's harder and denser than aluminium but softer and less dense than cast iron.

Ah... the ever elusive 'middle way'.
 
Cylinder head specs with compression ratios for v8 heads are given on page 2 of SB subject No. 6000 dated April 8, 1948
 
The sheet I sent Blown 49 for his chart was the best I have ever seen. It was from a Canadian bulletin and showed all USA and Canadian heads from '32--about 1950, with cc specs AND compression figured for all the 24's for both 221 and 239 use! It even had specs for the 3 different USA Denver heads, information found here only on earlier versions of page 2 that have been discarded in most bulletin sets.
New versions of all of these basic pages were periodically issued, and when they arrived the old page 2 went into the trash, usually taking some info that Ford considered not worth keeping.
I only have one USA set in which the service guy kept most of the obsolete versions with stuff like Denvers.
 
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