21 stud MACK flathead heads info?

[Dusters swe]

Do any have any info about those heads?

 

[Brendan]

nope, they look Kool !

 

[JM 35 Sedan]

Never saw a set of MACK 21 stud pump mount heads. I would be interested in seeing some info on those as well. Have you tried looking on GOOGLE for info on those?

A little larger picture may help some old eyes see this better

 

[Brian]

I once had a new set of aluminium pump in head, heads, one had FOG cast on it the other had ***. Nice clean castings with the American style combustion chambers. Canadian combustion chambers on these early heads are shaped differently. Brian

 

[Flatout]

I have a pair of NOS heads that say FOG on one side and FOH on the other. I reasoned that the FO part was for FORD. The G and H had me stumped. When I pondered out loud on this, my wife suggested "gee" and "haw" like a dog sled musher would direct a team of dogs. Anybody have a better explanation?
Stan

 

[Barry WNY]

Love to have a pair of them in dome top. Or any alum. 21 stud in dome top, like finding chicken teeth.

 

[Dusters swe]

Btt