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Ford Tractors Discussion Forum
Order Ford 640 Parts Online

Re: Identify Ford 640 versus Ford 641

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02-11-2013 17:09:46

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John Smith8N:
Thanks for the info. When it stops raining here in Myrtle Beach, I'll go have a look.

I think that I have found the engine date code on the block just below the alternator. It seems to me to be 8A G followed at some distance with the number 2. The 8A2 part seems to decode as Jan 7th, 1958, if I read the explanation correctly. Not sure what the 2 means. I'm guessing that this means my tractor is a 1958 model, so most likely a 641!


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02-11-2013 21:30:39

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 Re: Identify Ford 640 versus Ford 641 in reply to bobs641, 02-11-2013 17:09:46  
8AG translates to 1958, November, 7th. Before you ask: yes, A is November. 1 through 0 are January through October, A is November and B is December.
The numeral 2 is some other unknown identifier. I don't think those of us who pay attention to these details have ever seen anything other than a 2 in that location. Over on the right side of the block you should find a raised casting number 310905 which is a 134 cu in block. The 172 cu in block as used in the 801/901 tractors has the casting number 310609.
Your tractor should have the left brake cross shaft that passes under the hydraulic reservoir as John Smith stated.

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