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69 / 70 Quadrajet ID number and build date

1296 Views 11 Replies 4 Participants Last post by  marcrose
Trying to decode the ID number on a Quadrajet
7040204 FF dated 0429

The “0” in 7040204 = 1970 Chevy

But the assembly date code has me confused ?
"042" was posted in the ad by the owner

042 = 42 day of the year carb was assembled
9 = 1969

That would be way to early in 1969 to be assembled on a 1970

Is it possible the first number in the “042” is not a zero ?
This is the picture posted on Craigs list.... its hard to tell ?

If it’s a 3 then the unit was assembled in Dec of 1969 to be used on an early 1970 car
I'm trying to locate a 7040204 carb for a March 09 1970 engine build
If it is a 3 would this still be to early for the build date I'm looking for

Thanks for taking the time to look - Bob Tire Automotive tire Bumper Tread Automotive exterior

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Bob my 70 SS 396 th400 with a 10D body and a 9/9/69 engine has a carb dated the 246th day of 69, September 3. Be sure to check the fuel inlet threads for wear.
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