General Category > Quadrajet Carb Talk and Tips
What is this airhorn's correct application?
Ethan1:
Just because it cast by Rochester, doesn't mean it could not have been remanufactured by Holley. ALL Holley reman units (I believe) were cast by Rochester. And most Qjets (ones needed for restoration) are reman units. Not saying they all are. Just hard to find actual ones. Don't quote me on that. ;D
And I am discrediting your part or your information. Just kind of leery on parts like that.
unruhjonny:
Ethan, I have no doubt you mean well, but you seem to be missing the cusp of my question.
This has nothing to do with an OEM/SR carburetor being remanufactured.
The GM parts books give numbers for assemblies;
In the cast of an airhorn for any model year, the airhorn is assigned a part number, but it doesn't match any visible casted part numbers, because the assigned part number is for the fully assembled (or sometimes partially finished) item;
The casted part number of any given item might be applicable to two or more applications, but final machining and assembly would dictate it's correct application.
I want to know which OEM carburetor application number(s) that this airhorn might be correct/original to.
From my observations (please keepin mind I am a couple decades younger than many in this game), it is rare to come across a quadrajet from the late sixties or early seventies which hasn't gone through a(n often butchered) remanufacturing/rebuilding.
Ethan1:
--- Quote from: unruhjonny on June 30, 2017, 09:44:28 AM ---Ethan, I have no doubt you mean well, but you seem to be missing the cusp of my question.
This has nothing to do with an OEM/SR carburetor being remanufactured.
The GM parts books give numbers for assemblies;
In the cast of an airhorn for any model year, the airhorn is assigned a part number, but it doesn't match any visible casted part numbers, because the assigned part number is for the fully assembled (or sometimes partially finished) item;
The casted part number of any given item might be applicable to two or more applications, but final machining and assembly would dictate it's correct application.
I want to know which OEM carburetor application number(s) that this airhorn might be correct/original to.
From my observations (please keepin mind I am a couple decades younger than many in this game), it is rare to come across a quadrajet from the late sixties or early seventies which hasn't gone through a(n often butchered) remanufacturing/rebuilding.
--- End quote ---
I am only 28 years old myself, Jon, so please forgive me. So, I am still learning myself.
I already know they were assigned a part number for complete assemblies. I do have the Jets and Metering Rod post down in the Parts and Numbers section. So, I know all about the BIG AC Delco books.
But, not in all the AC Delco books, did they put just airhorn assembly part numbers. ;)
I agree though. Good luck trying to find an original 1970 HO 455cid GTO Qjet for less than $2K. Remanufactured or Service Replacement, yes, but original, absolutely not!
unruhjonny:
--- Quote from: Ethan1 on June 30, 2017, 04:05:43 PM ---...
But, not in all the AC Delco books, did they put just airhorn assembly part numbers. ;)
...
--- End quote ---
Please enighten me further!!
Ok, at this time, I have one complete 7029268, it is an original unit with a pick code, and 2288 date code. This carb has an airhorn that I believe is wrong, it has a 7038736.
I actually have two 7037535 airhorns;
One, through process of elimination, I am certain does not belong on the carb it came installed on;
The other I cannot be sure, because it came on one of those generic rebuilt carbs, but was an application number of which I haven't had opportunity to inspect additional units...
Does anyone know if say one casting number was used by Carter one several applications, while the real Rochester's which were manufactured for the same applications had different casting number airhorns? or did both the Carter and Rochester manufactured Quadrajets use the same casting number parts, regaurdless as to who casted/assembled it?
Ethan1:
--- Quote from: unruhjonny on June 30, 2017, 06:03:27 PM ---Please enighten me further!!
Ok, at this time, I have one complete 7029268, it is an original unit with a pick code, and 2288 date code. This carb has an airhorn that I believe is wrong, it has a 7038736.
I actually have two 7037535 airhorns;
One, through process of elimination, I am certain does not belong on the carb it came installed on;
The other I cannot be sure, because it came on one of those generic rebuilt carbs, but was an application number of which I haven't had opportunity to inspect additional units...
Does anyone know if say one casting number was used by Carter one several applications, while the real Rochester's which were manufactured for the same applications had different casting number airhorns? or did both the Carter and Rochester manufactured Quadrajets use the same casting number parts, regaurdless as to who casted/assembled it?
--- End quote ---
There is NO known manual with just air horn part number's for Qjet's. I was speaking of other Rochester's in the AC Delco manual. That being said, there has to be a list out there. So, sorry for getting your hopes up.
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