Date Code on 69 Tri-Power Carbs?

[Patrick N.]

I came across these carbs a couple weeks back and was not sure how to interpret the date codes. These are on a 69 427 435hp Manual so the part numbers jive but shouldn't the date code be a 3 digit, year/month/week code?
The center carb is 3940929 has a date code of 0595. Two front & rear carbs are 3902353 and have a date code of 1387.
Thanks,
Pat

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[Jack C.]

Re: Date Code on 69 Tri-Power Carbs?

I alway thought the date is comprised of only 3 characters.

[Patrick N.]

Re: Date Code on 69 Tri-Power Carbs?

Hi Jack,
That is what I thought as well

[Dick W.]

Re: Date Code on 69 Tri-Power Carbs?

Service replacement carburetors with those dates.

[Patrick N.]

Re: Date Code on 69 Tri-Power Carbs?

Thanks Dick. As service replacements, do you know why there are four digits to the date code vs. 3 digit date code? Curious as how to read these numbers.

[Ralph S.]

Re: Date Code on 69 Tri-Power Carbs?

0595= 59th day of 1975 ??

[Patrick N.]

Re: Date Code on 69 Tri-Power Carbs?

0595= 59th day of 1975 ??

Got it! Duh- makes perfect sense, thanks Ralph.
Pat

[Dick W.]

Re: Date Code on 69 Tri-Power Carbs?

Thanks Dick. As service replacements, do you know why there are four digits to the date code vs. 3 digit date code? Curious as how to read these numbers.

Patrick I am not sure when they went to four digit date codes, sometime after the cars I am interested in (thru 1972) were built. I did hear a vicious rumor that they built cars after July 1972, but am not sure about that.

[Mike M.]

Re: Date Code on 69 Tri-Power Carbs?

i thought they went to 4 digits after 1970, but then again, i ain't no shark guy like papa smurf.mike

[Patrick N.]

Re: Date Code on 69 Tri-Power Carbs?

Patrick I am not sure when they went to four digit date codes, sometime after the cars I am interested in (thru 1972) were built. I did hear a vicious rumor that they built cars after July 1972, but am not sure about that.

HA- As far as I know Corvette peaked in 68

[John H.]

Re: Date Code on 69 Tri-Power Carbs?

4-digit Holley dating started in 1973.