09-12-2016, 11:16 PM
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#17
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Senior Member
Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,385
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Re: What are these and what for?
Quote:
Originally Posted by davepl
While I don't doubt they -can- be used as a drain plug, I do have some doubts about that being their reason for existing. I'd still like to know the rationale for GM including them in early castings, and why they went away eventually...
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This
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Tony
71 Custom Deluxe, SWB, 2WD, 402, A/C.
I developed an assembly guide (kit) for restoring this truck from the ground up, complete with details including full hardware descriptions. Much of the info. applies to all 67-72 GM. My build thread, with some info. about the assembly kit https://67-72chevytrucks.com/vboard/...d.php?t=730025
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