Posted: Sun Nov 01, 2020 8:41 am Post subject: Dating my block
I’m trying to date my M38 block. It is the later rear flange type modified for better fording i believe.
Behind where the drag link would be I have the following cast into the block.
2 6 D. Is the June 2nd 1952 ?
The long casting number is, 641087 L W 13A. N1 CR N2
Thanks, Dave. _________________ David Wigham
Joined: Oct 02, 2014 Posts: 864 Location: South Carolina, Dorchester County
Posted: Mon Nov 02, 2020 9:19 pm Post subject:
Is there a serial number on the block (on the boss above the water pump) --- a MCXXXXX or RMCXXXXX number? That might be your best indication to zero in on a date of manufacture bounced against the known data base.
If the oil pan is off, I believe Willys also stamped a machining date into blocks on that mating surface on one of the corners near the rear main --- if I recall correctly. I believe that blocks were cast a long time before they were machined... (seasoning time).
I think casting numbers will only give you an early or late rough idea of the date of manufacture.
I'm sure Wes can add a lot more answers to your question. He must be busy.....
Good luck! _________________ Ron D.
1951 M38 Unknown Serial Number
1951 M100 Dunbar Kapple 01169903 dod 5-51
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