I have the protecto plate from the original owner for my 427/390HP that shows an engine assembly date of February 1, 1967. The original engine is long gone. I have an opportunity to buy a standard bore correct block with casting date A 24 7 (January 24, 1967). That is 7 days before my engine assembly. 8 if there was a Saturday shift. Noland Adams book shows 5 of 17 examples of 7 or less days between casting and assembly. Do you feel this is too short a time frame between casting and assembly? What about a .30 over bore with casting date December 17, 1966 that is also available to me? Both about the same price.
1967 Big Block casting dates
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