I was corrected by a member on the OldIH forums in that AMC didn't start making engines for IH until 1968 or later. Thus this would be an in-house IHC engine, denoted the BD 240. So we'll start by making that correction and by referring to this engine as the "240", which we could safely assume is the displacement, in cc's.
Here it is, as it was pulled out of the truck a couple weeks ago:
The single pot carburetor is about as gummed up as they come -
But when I pulled the valve cover....
The valve-train was as clean as a whistle. No oil build-up, no crud......good sign.
