Re: Do original ball joints have grease zerks?
Funny to me : I was thinking about this very thing earlier today. Worked with a fella in 1972 that had a 1970 c-10 . He said same thing then. There are no grease fittings in his pick up. I also had a new car in 1970 it had no grease fittings either. It was not a Gm product. Any way some had a plug in the fitting hole to be removed. Some as you mentioned had no grease fitting hole. So IMO. Some did not have some did have. my.02 cents.
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