NAA/Golden Jubilee serial number

Fordfarmer

Well-known Member
Part of a discussion on another site...
When did Ford switch from stamping the
s/n on the block to the bellhousing?
After the first 2-3 months of NAA
production, right? Anyone know the s/n
break that that occurred?
 
The serial numbers on the first 22,238 NAA models were stamped on the left front
of the engine block just below the head as shown in the photo below.

FORD TRACTOR ? NAA/JUBILEE ?EARLY SERIAL NUMBER LOCATION:
naaserialloc1.jpg


Serial number location on later NAA models was on the left side of the transmission case just below the flat above the starter bulge as shown in the photo below.

FORD TRACTOR ? NAA/JUBILEE ?LATE SERIAL NUMBER LOCATION:
naaserialloc2.jpg

-From John Smith's archived info now at F/FCA.


Tim *PloughNman* Daley(MI)
 
FWIW & FYI: You need to understand that Ford hand stamped the engine block serial number on every vehicle, not just the tractors. Engine blocks were cast at the Rouge foundry (note no s/n stamped) and when cooled, were moved to a hold area to cure for 30 days. Standard practice for cast iron is to allow a 'green period' to cure as the material is too brittle to machine until then and will break tooling and material. It is similar to seasoning firewood. You don't use fresh cut trees for firewood as it won't burn. It needs to be seasoned to cure so it does burn. Serial numbers were only stamped once the assembled engine blocks were tested and passed QC Inspection. Blocks were then moved to a hold area at random and as the assembly line demanded, pulled AT RANDOM to meet up and be mated with a vehicle. Serial numbers were meant to also ID the vehicle s/n but many engines were swapped out to replace blown or rebuilt engines. The term 'mutt' is used often to describe a model with a swapped out engine. An engine could have been built and ID'd in one month and not pulled for assembly until the next month or two. Understand? So it's kind of a moot point trying to pinpoint a date when your tractor/vehicle was built. Unless one has positive proof your tractor was assembled on a particular day, improbable and highly unlikely, don't worry. No records exist to verify what was built and when it and, it is only the parts YOU have on YOUR tractor that matter. One example is 6V/POS GRN or 12V/NEG GRN.

FORD ENGINE BLOCK SERIAL NUMBER HAND STAMPS:
q61xMsGh.jpg

... note date of this Service Bulletin


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I'm not worried about an exact date.
One guy commenting on the thread insisted that only NAA's with the s/n stamped on the block were Golden Jubilees; any with a bellhousing stamp were '54's or "fake" Golden Jubilees.
The s/n on mine is well below the last of the '53 models.
 
"Golden Jubilee" was never the actual model name. They were all NAA's (or NAB's if they came from the factory made to run on kerosene) no matter when they were made. The "Golden Jubilee" name was a marketing tool used to point out to the customer the 50th anniversary, or "Golden Jubilee", of the Ford Motor Company. The NAA's and NAB's sold in 1953 had the "Golden Jubilee" badge on the front, but that wasn't the name of the model.
 
Also, because of swapping out of engines and/or transmissions due of failures over the years, there are several NAA's out there with no serial number at all because it has a later engine and an earlier transmission, and some with two serial numbers because of an early engine and a later transmission. So unless all date codes on all components agree that the entire tractor was manufactured within a particular few month long window, the argument could be made that not many of them out there are truly original to one year or the other anymore.
 

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