Odd casting numbers

Yeah 2780930 is kinda ingrained lol.
I wasnt sure if all 340s had that casting #.
toolmanmike said
Exactly. My book goes to 76 and that number is 400****** so what you have is a 76 or newer. Not a 340 that I can see.
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Marcohotrod said
all 340 blocks - 2780930 or 2780930TA
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