big chev #s decode help

662drsedan

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Mar 24, 2013
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66 chevy II
Looking for help decoding this big block stamped # from front pad. TO5137BJ Thanks, casting # says 69-71 427.
 

hurst01

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662drsedan,

Double check your numbers, I can't find what you have listed. I will try to help if I can.
 
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