Date code timing question - rear end housing

[Mel H.]

A question for the judges on the dating for a '63 rear end housing. Would a casting date of mid Sept '62 and stamp date on bottom flange of mid October '62 be considered too far in advance for use on a car with a build date of 1-21-63? Or is it 'within acceptable date range'?

Thanks in advance...

[Joe L.]

Re: Date code timing question - rear end housing

A question for the judges on the dating for a '63 rear end housing. Would a casting date of mid Sept '62 and stamp date on bottom flange of mid October '62 be considered too far in advance for use on a car with a build date of 1-21-63? Or is it 'within acceptable date range'?

Thanks in advance...

Mel-----


I'm not a judge. However, I can tell you that the time interval between the differential carrier housing casting/ stamped date codes and the build date of the car is well within the acceptable range for NCRS judging. It might be a little longer than usually occurred but it's well within acceptable standards.

[Mel H.]

Re: Date code timing question - rear end housing

Thnx Joe... agree it probably 'in the zone'... actually, I'm not sure if they even judge rear end housing dates now that I think about it... still, am curious how far back it could reasonably go, or if this was still within the typical date spreads.

[Joe M.]

Re: Date code timing question - rear end housing

October 10, 1962 build date on my coupe

original rear cast - I 22 2

rear assembly - 10.8.62

CB 3:36

[Wayne M.]

Re: Date code timing question - rear end housing

Thnx Joe... agree it probably 'in the zone'... actually, I'm not sure if they even judge rear end housing dates now that I think about it... still, am curious how far back it could reasonably go, or if this was still within the typical date spreads.

Mel -- definitely within zone of many examples; maybe not quite typical, depending on whether start or end of a model year run, maybe a labor stirke, and the rarity of the ratio/posi combo (low demand - FILO inventory scenario).

Eg. I have this '64 diff: cast Oct '63 (J-18-3), assembled Jan '64 (CF 1-3-64).
another cast D-5-5; assembled FA 7-15-65, car produced Aug 2nd '65.
another I've seen: cast D-10-5; assembled AM 7-6-65, car produced Aug 2nd '65.

Here's another case, both engine and diff very close, but trans assembled 3_1/2 months prior [from '65 Protect-o-Plate of first car I ever owned]

[Gary B.]

Date code - rear end housing; not judged

A question for the judges on the dating for a '63 rear end housing. Would a casting date of mid Sept '62 and stamp date on bottom flange of mid October '62 be considered too far in advance for use on a car with a build date of 1-21-63? Or is it 'within acceptable date range'?

Thanks in advance...

Mel,

The rear end housing date and numbers are not judged, at least not on mid-year cars. That information is too hard to visualize.

Gary

[Mel H.]

Re: Date code timing question - rear end housing

October 10, 1962 build date on my coupe

original rear cast - I 22 2

rear assembly - 10.8.62

CB 3:36

Thanks to all for the inputs.. wow, Joe. If I follow your comments above, your case was assembled 10-8 and the car built 2 days later on 10-10.. thats really close.. yet others at 3 months. Just shows how wide the date spreads can be.

[Harry S.]

Re: Date code timing question - rear end housing

Mel, if you have Noland Adams book, Vol 2 1963 - 1967, look at page 186 under Rear Axles.

From the VIN's listed and what the Codes are you can start to draw conclusions as to how close the dates are.

I believe the heading Casting Date is incorrect, it should probably read Assembly Date.

[Joe M.]

Re: Date code timing question - rear end housing

The dates are close. Noland projected Oct 12th or 15th back in 1984 for my build vs todays calculators that put it at Oct 10th.