Quadrajet What Do I Have

dandd93 · #1 07-10-2021, 01:41 AM

17054913 3551 Is this a Service Replacement? I don't understand the Julian Date.

When a date is later than the carb number is it automatically a replacement, such as 7040263 3225? 1970 carb with a 1975 build date (if I have that correct)

Thanks for any help.

**wvhylander** · #2 07-10-2021, 02:23 AM

Julian code is read last digit of the year then day of the year. 3225= 3=1973 225 is day of year I suppose it could be 1953,63,73 or 83

**olredalert** · #3 07-10-2021, 08:56 PM

----Don't think it's 53 or 63 if it's a quadrajet!.....Bill S

Ralph Spears · #4 07-10-2021, 09:59 PM

Pontiac Trans Am 400-455 4 speed 1973 1974

**wvhylander** · #5 07-10-2021, 11:03 PM

I was referring to the Julian code not the actual Quadrajet.

dandd93 · #6 07-11-2021, 12:46 PM

So in this case 7040263 3225 is a 1970 carb made in 1975?

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earntaz (07-10-2021)

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