Block and heads date codes

that difference ( one week) is not a big deal.


Z. Ray

 

"Normal" I would say not from my experience. Generally there is more time between the two but a week would not cause me to question the block and head being mated together.

Checking my database I found (from original engines) the tightest spacing was two days more common was a month (before or after)


Hope this helps

 

Jeff,
I do not have my original engine. I have a 428PI from a later production
GT500. Any idea what block and head date codes my car would have had?
67 GT500 #314 built 12/21/1966. (scheduled 12/16/66) Thanks, Rich

 

Sorry this took a bit. Currently working on a spreadsheet to document the spread a little more concretely.

From what I see currently, not allot of samples at this point, it appears that during 67 at San Jose two months between when the block and/or heads were cast and when the car was complete was typical.

Hope this helps.

 

Were the two heads usually close to the same date. On my 69 500 the heads are a month apart. Block 2/69, heads 2/69 and 1/69

 

From what I have - same day is sometimes seen, 1 week to 1 month is typical