273 casting number question

toolmanmike said

The 315 head should have the early intake bolts unless a few of the earliest 66's were built with 65 parts. I haven't heard or seen it but anything is possible. I would think the leftover heads would be transferred to Mopar Parts when the change over occurred.

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Mike, the strange thing is that this is not an early 66 motor! By any account, an assembly date of April 12th is very late in the model year, and very close to a complete change of body style, and the introduction of the 318!! I know the 273 continued on through 69, but its an oddball for sure! Not surprised considering Ma's business as usual practice, but odd just the same!! Geof