It has steam holes and the other side of the head has the 848 and 850 numbers. It's a 261 head. I'm just wondering if anyone would know why someone would grind off the casting number. It's not a special head or anything so why do it it, why hide what it is. It just pushed my curious button.
Maybe it's a 848 head off of a 235 and when they modified it by drilling the steam holes they didn't want to mix it up with non-modified heads in the shop.
The side of the head with the 848 and 850 numbers are there so the foundry knows which sand cast mold to use when casting either of those two different heads which share that same part of the mold.
Mike B
