Is 4.5 months prior to car production considered date code correct for engine block?

[RemCharger]

Here’s my dad’s 67 Coronet. Seems really early. First year for the 440HP so?

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Yes. Real real early.. the stamping on pad will definitely put you in the right direction..

 

[V_TastyTacos_V]

Here’s my dad’s 67 Coronet. Seems really early. First year for the 440HP so?

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What's the build date stamped on the motor?

 

[67RTblue]

What's the build date stamped on the motor?

9 6

 

[69Coronetrt]

9 6

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a C (model year 1967) 9 6 assembly for a 922 Scheduled production date is about right. It's an early in the year car but that really doesn't mean much.

Even though the block appears to have been cast in '65, a block is a block is a block. The bare block was obviously in inventory for about a year before being assembled as an HP assembly.