3877660 Water Neck ?
I have a question about the aluminum GM water neck part number 3877660.
I've seen two versions. One has a tab with a hole and the other version does not have the tab.
What is correct for a 1970 Chevelle L78 or LS6?
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Joseph Farrow
1970 Chevelle L78
1970 Chevelle LS6
1972 Chevelle LS5
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