Quote:
Originally Posted by 4dblnkldude
My 71 was built in late August, I just bought those for a 455 to put in an 81 TA and thought it would be cool to have a date code on my birthday.
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AFAIK. 1971 455 Ho Heads casing number 191 we’re only cast in early December 1970 and early Jan 1971 all other 1971 455 Ho Heads will have no casting date