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.
|
The difference of course is the lack of a pad under the early 9770716.
I doubt if the foundry guys would agree with you regarding the end cast marks. They DIDN`T do it if "they don`t mean much". Kinda sad John
Hoping other 64 guys with the 716 and those end marks could give us some dates and their + or minus. I am betting on nite or day shift. I would have thought the foundry pattern number would be part of the casting but I don`t see anything else.