Holley Carb Ink Stamp decode

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**L16pilot** · #1 06-26-2018, 09:21 PM

"For what it is worth, these photos are from Jason Ayers 1100 mile survivor 70 Z28, automatic."

Thanks Rick. Comparing the 4490 carb markings to the 4555 markings, the front airhorn stamp matches the stamped List # and the secondary vacuum canister stamp is the same for both with either "7540" or "754D"....no sure if the last digit is alpha or numeric. I am guessing the stamp on the side of the airhorn could be a date or assembler #. But the six digit stamp on top of the fuel bowls has me baffled.

The 4555 carb referenced has an 021 (1st week of Feb 1970) date stamp on the airhorn. The 4490 carb has an earlier 012 (2nd week of Jan, 1970) date stamp.

**YENKO DEUCE REGISTRY** · #2 06-29-2018, 02:38 PM

This is where us Deuce guys go for LT1 detail pics, just page down - the ink stamps on the 4555 are all there, and its an 021 built Holley....

http://chevynova.org/1970LT1_Engine.html

**L16pilot** · #3 06-29-2018, 05:16 PM

...us Z28 guys also.

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tunes (06-30-2018)

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