Holley date code

413 said

Not what was on factory Chrysler Holley 4bbl amd 6 bbl carbs. All factory 6bbl carbs have 4 digit dates on them 1968-1971.

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correct, *some* 4bbl holley factory carbs did have a 4 digit date sequence, but the list number would identify it as such. 6bbl carbs are their own animal and are not pertinent to this conversation.