Interesting data point for all the W72 cars. Block cast dates are documented, but have not seen anything on the 6X4 heads.
My car is a late 11/78 build, ‘79 Y84 W72. As with all 78-79 W72’s, the block cast date is 11/77 and the heads are both cast dated as 2/78 within a few days of each other.
Not sure how this compares with other ‘77, ‘78 and ‘79 W72 cars.
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