Chrome yella with your rebuilt box there is a good chance that unless you asked for you own box to be repaired you just got a exchange unit back instead of your box.
Hence the later date code.
The one groove two groove thing is not to be trusted as even Holden genuine M21 input shafts could have either one or two grooves as shown in this picture.



The two on the right are genuine items.
HK1837
Do you know where the aussie boxs were actually made, I am assuming it was Fishermens Bend but I would like to be sure on that one.
Cheers Paul.

Edited by user Wednesday, 26 August 2009 8:35:39 AM(UTC)  | Reason: Not specified

thanks Guys for the info, yes its a shame the case was changed as i like date correct items, at least the 9c4 numbers about right. The numbers i gave you should be a great indication of aussies built as there is 8 days between them and 1127 in # which makes you wonder if they were done in batches and stamped before any assembly took place

HK1837.
That is interesting is I have only found mentions of foundry work as being at the Fishermens bend plants.
The 1947 mention of the mechanical fabrication, engine and transmission manufacture and foundry facilities at Fishermens Bend.
The grey iron foundry, the nodular iron foundry are both mentioned as being there.

And the only other mention of gearbox related things is the 1966 mention of the Australian-made torque converter production commences at Dandenong and then the 1970 mention of the opening of the Woodville, SA trimatic plant.



This was from from some information Holden put out before and I have extracted the plant related information from it, this is what I have come across on that side of things.


1947
* 1,200,000 is spent on mechanical fabrication, engine and transmission manufacture and foundry facilities at Fishermens Bend.
* 750,000 is spent on fabrication equipment, presses and a new paint shop at Woodville, S.A.
* Over 300 Australian supplier companies gear up to fulfill Holden contracts for materials, parts, components and services.



1950
* GM-H acquires a Port Melbourne company to manufacture Holden electrical harness, electric components and AC Spark Plugs.



1952
* On Holdens fourth birthday, GM-H announces an 11 million expansion program designed to raise output to 200 units a day.
Melbourne, Sydney and Adelaide plants are to be enlarged and modernised, production efficiency and quality levels lifted.



1955
* 2,152 acres of land are selected at Lang Lang, Victoria, and plans to construct a modern and completely equipped proving ground
- Australias first - commence.
* Work begins on the Dandenong (Vic) plant.


1956
* The new Dandenong body and assembly plant opens.


1957
* The Lang Lang proving ground commences operations in August.
* The one millionth car body is produced at the Woodville plant.
* NASCO parts operation commences at Dandenong.


1958
* A 9 million expansion of plant and manufacturing facilities, aimed at increasing annual production to 125,000 units,
is announced. Planning of a new facility at Elizabeth, S.A., begins.
* Work begins on a banked, circular high-speed test track at the Lang Lang proving ground.


1959
* New Body Hardware plant at Elizabeth (S.A.) begins production.



1962
* A new body assembly plant opens at Elizabeth, a new 6-cylinder engine plant at Fishermens Bend nears completion.


1963
* The new engine plant and foundry commence operations at Fishermens Bend; capacity is 700 engines a day.
* Further expansion plans, with a 175,000 annual production target, are announced.
* Elizabeth (SA) trim assembly plant and paint shop commence operations.


1964
* GM-H employee total reaches 23,914
* A new Technical Centre opens at Fishermens Bend. It houses over 900 designers, engineers, draftsmen, modellers,
technicians and skilled tradesmen and provides state-of-the-art automotive design and development facilities.
* Trim fabrication plant commences operation at Elizabeth (SA).
* Construction of Acacia Ridge (Qld) plant commences.


1965
* A new, mechanised grey iron foundry at Fishermens Bend begins pouring.


1966
* Investment in expansion continues. Vehicle assembly at the Acacia Ridge, Qld, plant commences.
* Australian-made torque converter production commences at Dandenong.


1967
* New nodular iron foundry, officially opened by Prime Minister Harold Holt, commences production at Fishermens Bend.
* Safety Design Test Centre at Lang Lang proving ground and automatic transmission plant announced;
# new electroplating plant opens at Woodville (SA).


1968
* Torana bodies are made in Australia for the first time.
* Work progresses on a V8 engine plant at Fishermens Bend.
* More than 4,000 Australian companies are supplying Holden with components, materials and services.


1969
* Australias first automotive Safety Design Test Centre opens at Lang Lang proving ground, complete with barrier test and
Hyge sled facilities.
* A V8 engine manufacturing plant opens at Fishermens Bend.
The first Australian-made V8, developed at a cost of $22.5 million,is exhibited in the advanced, mid-engined Holden Hurricane
experimental car.
* Automatic transmission production commences.


1970
* A $16.5 million Tri-Matic automatic transmission plant, Holdens first, opens at Woodville, SA.


1971
* The GM-H national parts distribution complex opens at Dandenong (Vic).


1976
* General Motors celebrates 50 years in Australia.
* GM-H confirms plans to manufacture 4-cylinder engines at Fishermens Bend.


1979

* Holden announces a $300 million expansion plan, which includes a new 4-cylinder engine plant and foundry modernization program
at Fishermens Bend.
* A $6.7 million program to enable assembly of Commodore at the Elizabeth (SA) plant is announced in August.


1980
* Commodore assembly ceases at Pagewood (NSW) plant in August. Commodore production to be concentrated at Dandenong (Vic)
and Elizabeth (SA) plants.
* GM-H opens a new Management & Technical Education Training Centre in Melbourne.



1981
* Holdens new engine plant is commissioned and begins production of Family II four-cylinder engines.


1985
* A single point tool body assembly shuttle is introduced at the Elizabeth manufacturing facility.

But this is only one source of information and I always like to get several sources for this sort of thing.
Cheers Paul.

Reading that timeline is a sad reflection on Australian manufacturing.

All but two of those factories are gone and do Holden employ anywhere near 23,914 Australians as they did back in 1964?

---

If at first you dont succeed then skydiving is not for you.

I picked up a 4 speed from a swap meet and the date code is 24e8 with holden 8 in cast and the serial No. T829916.I was told it was in a worked fc and the slave cylinder on the cluch has been modified or bodged up.Thats all i can tell you.

Edited by user Monday, 7 September 2009 1:39:19 AM(UTC)  | Reason: Not specified

quote:

---

Originally posted by hq ss
lxtoranahzute thanks for the details.
From the date code of 24E8 I can tell you it was originally cast on the 24th of may 1978.
So HZ or I think LX Torana. ( It may even have been UC by then as I am not sure with the later Torana production dates)
Cheers Paul.

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Yes, it will be HZ or UC. UC Toranas were released in March 78.

Dr Terry

hey guys
i have a so called m20 box with the left side showing f111 with a 4 cast also and the right side having 7433771 with 12 cast and T293126 also around the side of that number 007.
what would this have come from and what is it?.i cant get the cluster gears yet,maybe at a later date.first and second gear seem very short would like to get it rebuilt.any help would be great.

quote:

---

Originally posted by chrome yella
i was bolting the gearmount on the first box #1c4 T963729 and noticed that 18 84 had been stamped into the back of the alloy ext housing.

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Would the 18 84 be the gearbox assembly date ie. 18th week 1984? 10 weeks from casting to machining to assembly seems a lot though.

I just came across this picture.


and it sure does give you a idea as to why the engine number jumped around so much in the build dates of vehicles.
Going by the amount of engines here I assume that it is for the beginning of the red motor range in the EHs.
Cheers Paul

Edited by user Sunday, 17 January 2010 12:21:41 PM(UTC)  | Reason: Not specified

Hi all, I worked at F/Bend in the 70s-80s-90s and can assure you 4 speed gear boxes were manufactured and assembled there and transported by road interstate.