Quote:
Originally Posted by rotorwrench
Bare replacement blocks were not numbered but they may have the little diamond shaped casting mark just above the timing gear cap on the right side front of the block. No diamond casting mark would indicate that is was cast during regular model A production. The blocks cast post production were subcontracted out so they have the foundry's diamond casting mark. Block characteristics changed during the model A production but a person has to know what those subtle changes are to identify them. ALSO: Model B blocks look the same but they were numbered on the flywheel housing instead of the block so it could be a model B engine.
As far as marking it, all I can say is at least use stamps that replicate what Ford used depending on date of manufacture. Replica stamp sets are available including the star.
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So could a person simply unbolt the flywheel housing and move it from engine to engine? Is that number visible with the engine in the car?