Re: part numbers/casting numbers for 1968 L36
John, I posted the date and number of the parts book in case someone had previous information that was better than mine. I saved a lot of the parts books from when I was in GM parts, but didn't have the foresight to save a 'change-up' book which would have given original numbers.
The numbers that I gave seemed to be correct in that the new numbers had a note stating that pipe thread plugs needed to be put into them to make them right for 68.
I'll bow to your info.
John
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