From:Mike Lynch
Subject:RE: cam followers Date:Thu Jul 26 20:16:15 2018
Response to:6899

I have only seen the blocks with the shorter hex. It doesn't mean the others
are not original. Henderson was known for making changes anytime within
a model year. Sometimes he would change, then change back. Like the
valve rockers with the cups for pushrods for some 1916's. He must not
have liked them because he changed back to the clevis style by 1917.

there's two styles of cam followers here, the hex length differs., can anyone
please tell me what model years are what? these are available too as well
as the other parts i have queries on.