CE motor stamping info

[bcmiller]

There were complete transmissions - stamped CTx (x for last digit of year) and then a serial sequence number.  They usually had an assembly date stamp.  These were complete Chevrolet Transmissions.

There were also bare cases - stamped CCx (x for last digit of year) and then usually a serial sequence  number. These were Chevrolet Cases, sometimes also called “counter cases”.  No assembly date on these, because they were not assembled at the transmission plant.

I have several of each.

[69Z28-RS]

Bryon,  Many of us would love to see photos of the CT and CC case stamps, if you could get a photo or three?  (I've never seen/noticed a stamped replacement transmission or case).

[bcmiller]

OK sure, I took a couple of fresh pics.

This CT0 case (actually stamped as CT00 - incorrectly) was a complete M22 assembly.

This CC9 case was (and still is) just a bare case. Note this has an A in the serial sequence number.

The earliest CC and CT cases I have seen are 1968 (which makes sense based on the earlier letter for CE blocks, I think they both started at about the beginning of the 1968 model year).

The latest I have seen is 1974 (I have a CC3 case but not a CC4) but they were probably made longer than 1974 for service.

I am hoping to get some of this written up and added someday, along with some additional rear axle information.  Hopefully in the not so distant future.

[bcmiller]

Sometimes the CC cases were also stamped on the back of the main case, on the surface where it bolts together with the tail housing. 

[69Z28-RS]

Thanks for the photos; they provide some interesting information on the *replacement stampings*.  As I had posted a bit earlier, the memos did not provide as much information on the CT stamps as they did for the CE stamps; ie no mention of where the stamps should be, and that is reflected in how the transmission plant interpreted the memo instructions!   ie. CC well away from the numerical sequence of the ID, and also on different lines!

Also there was no mention as all of the CC (for empty case), but it makes sense that the trans plant may have extrapolated that information to the empty case situation.   But it means that the plants (or GM) would have been required to store the unique ID information for at least the warranty periods involved, and perhaps longer?

Were these stampings always on the FRONT case?? 

[bcmiller]

Gary, the transmission stampings were normally in the same location as the regular assembly stamps. Passenger side, rear, on the wide back part of the main case. 

Let me get a pic to describe better...

Sorry this was dirty when I took the pic a few years ago.

[69Z28-RS]

Bryon,

You showed stamps in multiple locations (including the CC stamp on the rear - hidden when assembled into a trans), and I asked if all of the stamps were *somewhere on the front case*, and you replied..   NO...     no What??   Are all of your examples ON the front case? or not?

[bcmiller]

Did not understand your question at first.  Sorry.  Always on the main case, not on the tail housing.

A CC case may or may not have that second stamping on the "hidden when assembled" area. This is usually found on later (70s) cases.

[69Z28-RS]

OK.   Thanks for clarifying; that substantiates my interpretation of the memos.

I'm curious why you have so many trans parts...  Are you a parts dealer?   buyer/seller? or ??

[bcmiller]

OK.   Thanks for clarifying; that substantiates my interpretation of the memos.

I'm curious why you have so many trans parts...  Are you a parts dealer?   buyer/seller? or ??

The best description is probably "hoarder" of engine and transmission parts, especially CE engine blocks and CT/CC transmission cases, amongst other things.  lol 

I swear this only happened once (and it was only there for maybe a few hours), but there has to be a Jeff Foxworthy joke that can be tied to this...
"If your wife has ever tripped on a Muncie transmission case...................in your DINING ROOM........"

Now I am strictly limited to keeping them in the garage, basement or my storage trailers...  lol

[69Z28-RS]

Are these transmission cases/parts that you've personally broken???    

Are you 'shifting' challenged?        (J/K).

I've a friend who for years bought all the broken/used Muncie transmissions, and then REBUILT them.   He's very good at rebuilding manual transmission (recently he assisted me in rebuilding the T10 from my '60 Corvette!)  He says he enjoys it; right now he has more than 10 Rebuilt Muncies sitting on a shelf in his garage.   I've ASKED him WHAT are his plans for these transmissions as I'm sure some would be very desirable to people with Camaros/Corvettes/Chevelles/etc who desire to *restore* their cars!  He's older than me, but not interested in selling...  even though he's more interested these days in building resto mods than restorations!??   

[bcmiller]

Nope, none of the Muncies are anything that I have personal experience with in breaking.  Some of these are complete functioning 4 speed units, some are "circle track" modified to 2 speeds, some are in need of repair and some are just empty cases that have been collected over the years.  Same with the engine stuff.

The only transmission I have ever broken (back in 1986) is sitting on the shelf as a reminder.  It is a Borg Warner Super T10 that had been rebuilt about 2 years before it's demise.  It came apart on a normal 4-3 downshift for no apparent reason.  There were hundreds of times that it could have potentially blown up for a good reason before that, but when it went, there was no real abuse taking place.  I was able to limp it about 30 miles (with noise that could damage your hearing) before the contact between the broken cluster gear and the input shaft ended...and caused it to finally give out.

My collection of parts is small compared to a few people I know.

[Kelley W King]

It,s OK Bryon, I have a friend who has a 427 on an engine test stand in his finished man cave plumbed to the outside. And it does run.

[Mike S]

 That must be the caves 'space heater' 

[69Z28-RS]

It,s OK Bryon, I have a friend who has a 427 on an engine test stand in his finished man cave plumbed to the outside. And it does run.

WOW..  I'd love see/hear that one@   

Re Bryon's wife tripping over the trans case in the dining room, I suspect some (or most?) of us have similar stories..      When I first got married, was in the USAF and living in a one BR apartment, I had a Henry J I was working on in the base hobby shop.   While it was there, I had the 'extra parts' stored along one wall of our bedroom, including:  The interior (two buckets and rear seat), 327 engine block, 283 forged crank, 186 heads, and a few other parts, ...   but I put them against the back BR wall, so it was difficult to trip over them...  think I also had some parts UNDER the bed...

hmmm..  I think I have some 'new' interior materials under my bed right now too!  and some burlap (just purchased) in the box next to our breakfast table..   but wifey always complains within a day or two after 'moving it to the garage'... 

And my 'office' is so buried in manuals, books, notes, etc (from my car work) that we have to close the door when we have company!