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My GM engine number when was it build??
Listers,
Currently working on the restoration of my Machinery HUP, I found on the GM engine a number GM8 8835849 Can someone tell me when this engine was build?? Thanks PB |
#2
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No
Casting # 3835849 is off a 1952-3 216 passenger or truck engine. What is the casting date code that will be found nearby? It will be in the format A to L for January to December, then 1 to 31 for the date and then 0 to 9 for say 1950 to 1959 (or 1940 to 1941, 1960 to 1960, etc.).
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#3
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Quote:
Looking closer it reads GM3 instead of GM8 the rest of the number is possible 3835849 indeed |
#4
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Numbers
The '3' can look like an '8'. There wil be a casting date code near that number. It may be under years of grime!
What is the engine number stamped on the pad on the block? |
#5
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Head
Under the valve cover will be found the head's casting number and casting date code which are in the top of the head and not on the side.
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#6
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Follow the restoration on this link http://www.facebook.com/media/set/?s...1&l=e48b5663b6 Pieter |
#7
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Ok David, I removed the Valve cover today, the serial number that I found is GM 838773 CON9 H151 Hope this gives you enough info Pieter |
#8
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Date
GM = General Motors, possibly either Flint Grey Iron Foundry or more likely The McKinnon Industries Ltd, St Catherines, Ontario (foundry)
838773 = 1938 on 216 casting CON9 = Conveyor 9, to i.d. the casting batch should there be a problem..introduced 1929 H151 = could be August 15th 1951 but must be August 15th 1941 This would make it from possibly a '1942' Model Year engine as against a late '1941' engine. The original engine would have been assembled in Walkerville transmission plant a few weeks later, in Walkerville Transmission Plant, Walker Road, Windsor as it was by then. Engines then sat around in store and then got used up at Oshawa, without attention to any sequencing. One thing I forgot to ask I think: what is the engine number stamped on the pad on the front of the block? This will help identify its date as well as the original purpose (car, truck, light commercial, rhd). The casting date code that you found on the head will be similar to that on the block if you can locate it, on the side near that casting number. I am not speculating but wonder if the block was swapped for a later one at some stahe? |
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