Quadrajet Castings

[Jeff P.]

Looking for some help for the years these casting numbers were used. 7033744 Main Body and
7035530 Main Body for these Carburetors. How can they both be stamped 7028219 DG ? Could
one of these be a early production date, and one be a late build date ? Even if you have no idea,
maybe you know some resources that i can follow up with. Thanks in Advance.

[William C.]

Re: Quadrajet Castings

Where are you finding the numbers on the main casting you are referencing?

[Jeff P.]

Re: Quadrajet Castings

William from the back side in the round circle with the casting number.

[Jeff P.]

Re: Quadrajet Castings

These are the casting numbers i need to investigate. Could the first picture be a 1966 or 1967 casting number ?

[Joe L.]

Re: Quadrajet Castings

These are the casting numbers i need to investigate. Could the first picture be a 1966 or 1967 casting number ?


[ATTACH=CONFIG]48348[/ATTACH][ATTACH=CONFIG]48349[/ATTACH]

Jeff-----

I don't know what the exact circumstances are here. However, it's very possible that the same carburetor finished part number could be manufactured using either of 2 (or more) float bowls (the component with the casting numbers you show). The carburetor date code might reveal more information. For example, if the carburetors were manufactured years apart, that could easily explain why different float bowl castings were used. Even if they were manufactured close together, it could just mean that multiple float bowl castings were in use.

[Jeff P.]

Re: Quadrajet Castings

Joe these carbs have the same 7028219 DG Numbers. I think its possible to grind down the 1966-1967 part number area to make this casting represent a 1968 casting and do a Restamp. If we check the casting numbers (like on a fuel pump) then the Restamped Carburetor ID would be easy to catch. Just my observation. Does somebody have a book with these casting numbers with possible date they were used. The core price on this carb starts at 4 digits.

[Joe L.]

Re: Quadrajet Castings

Joe these carbs have the same 7028219 DG Numbers. I think its possible to grind down the 1966-1967 part number area to make this casting represent a 1968 casting and do a Restamp. If we check the casting numbers (like on a fuel pump) then the Restamped Carburetor ID would be easy to catch. Just my observation. Does somebody have a book with these casting numbers with possible date they were used. The core price on this carb starts at 4 digits.

Jeff------


I don't see what makes you think these are 1966-67 casting numbers. The GM #7028219 is a 1968 model year carburetor. Of course, some were manufactured in 1967 (but NONE in 1966). The 7028219 was used only for 1968 Corvettes with L-79. Consequently, I would expect the price of a core to be high.

[Jeff P.]

Re: Quadrajet Castings

Joe
The 7028219 DG Gang Stamp anyone can stamp into the Main Body of the carb, Kinda like the way the Impala 427 was stamped to be a 1966,67,68,69 427 Corvette... You know what i mean. If the judges look at the CASTING number to verify a 7028219 DG is just that.
I see this junk on Ebay all the time. Do you know where I can get information(books or a web site) to decode these Rochester Casting numbers? Anyone on this site ever worked at Rochester Division or have a Friend that can Decode These casting numbers?

[Joe L.]

Re: Quadrajet Castings

Joe
The 7028219 DG Gang Stamp anyone can stamp into the Main Body of the carb, Kinda like the way the Impala 427 was stamped to be a 1966,67,68,69 427 Corvette... You know what i mean. If the judges look at the CASTING number to verify a 7028219 DG is just that.
I see this junk on Ebay all the time. Do you know where I can get information(books or a web site) to decode these Rochester Casting numbers? Anyone on this site ever worked at Rochester Division or have a Friend that can Decode These casting numbers?

Jeff-----

As far as I know, there are no particular casting numbers associated with the 7028219 carburetor. At least, I don't think this is an area in which judges check for "correct" casting numbers because I don't know that anyone has determined just what the "correct" casting numbers are. Of course, I could be wrong.

Want to find out what a correct float bowl casting numbers is for the 7028219 carburetor? Simple. Just find a known-original carburetor of that part number and observe the casting number. Keep in mind, though, that may not be the only casting number used for this carburetor.

I don't know of any available resource to decode these casting numbers.

[Jeff P.]

Re: Quadrajet Castings

Joe.... Thanks for all your info on this subject.