Tj
I meant that my engine comment was added later.
I posted the 3100, 3600, and 3800 engine serial number codes. I could not read the right side of the engine serial number (in the photo I found in your photo album).
It looks to me that part of the radiator frame was cut off (the mounting surface of the frame). Then a cob-job side mount for your radiator was put in place, inside the original cut-off frame. This type of adaptation was very common, but much more common when using a newer 235 in an older truck.
I do not recall if the 3100-3800 radiator frames were the same. I will check later tonight.
