Quote:
Originally Posted by John V.
2nd pic is blurry. I don't understand what you mean by a "part number difference"?
The + and - marks out on the ends is interesting but since they are cast in, doubt they mean much. Wonder if these same + and - marks are common on all '64 heads in that location. might not be unique to the 9770716 heads.
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Not unique to the 9770716 heads, my 9773345 326 heads have those same markings on the end pads.