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.