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Registered
Join Date: Dec 1969
Location: chula vista ca usa
Posts: 5,729
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Well that one does not appear to have any way to adjust it? Remember that anything above 0 PSI is pressure and we think of any thing below 14.7 PSI or 1 atmosphere is a vacuum. So if it where me I'd search for suppliers of heavy duty (C60 class) Chevy truck parts. Good luck.
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