Re: Oil pressure light keeps coming on.
Seems to me there's an oil port on the gallery on the passenger side. You could tee a gauge in there and see what kind of pressure you have. I agree that the 5 quarts sounds about right. You could also tee at the location where your pressure switch picks up from now.
Good luck.
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Greg
64 GMC Suburban - 283, NV3500, 14 bolt
77 C10 swb - 292, SM465, 12 bolt
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