Aftermarket head?

Doodlebug1930

Junior Member
The head on my Model A Doodlebug has 'Model A' cast on the top. Is this a Ford factory thing or is the head aftermarket? Thanks for any help.
 
If you looked at a Pep Boys, sears, etc ad in the era you would be amazed at the non Ford parts you could buy for your "T", "A" --and other makes, both higher claimed quality, and lower price alternatives
 
There was two version of the aftermarket heads with model A , cast in block letters on top . One has the heart shaped combustion chamber with a compression ratio of around six to one . the other version has stock combustion chamber and four point twenty two to one compression ratio . I'm not sure who made them .
 
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