'37 "Made in Canada" Heads

I was re-reading a recent R&C mag where H&H was doing their thing to several flatties. They mentioned how they would do repair work to rare or sought-after heads. '37 "Made in Canada" aluminum heads were mentioned as a recent example of something they had refurbished. I've had a set as wall hangers for some time. Are they rare/desirable?

I guess this has turned into a "what's it worth" thread.... sorry about that.

 

i guess theyre pretty rare, i've only seen one set of those heads in my life. i dont know much about flatheads, but i'd be stoked to find some! aha

 

There are '37 USA aluminum heads, too. All of these are rare because of corrosion problems before good antifreeze was available...most are very similar to the iron heads in compression. I've got chamber specs for all US and Canadian ones around.
Aluminum heads were very often routinely replaced with iron ones at rebuilds because of all the problems associated for them. Modern coolant makes life fairly safe for those that have survived.

 

bttt

 

Ford Canada made aluminum heads for various flatheads through about 1951...all are VERY nice castings with clear, sharp logos. Some of the later ones are slightly higher compression that iron equivalents. I have C7RA aluminum heads on my '48...these are equivalent in application to our 59AB heads. If anyone wants finless heads, any of the Canadian ones can be very nice looking stock or polished.

 

these are the denver aluminum heads on my flathead...somewhat rare i guess..havent seen many..high compression heads.

 

these are on my Roadster that i polished, but i believe they lower the stock compression from iron heads (7.2:1) to ( 6.8:1 ) but then again i could be wrong

 

I run 51 Canadian heads on mine, took me a couple of years here in Canada to find them! They look good polished, but there a lot of work to keep clean.

Later