Just an update...it's definitely the pump itself making the sound and it still did it even w/ the hose disconnected from the valve cover. Took the pump apart and all looks good. I loosened the belt a little and it seems to have gone away. Still seems to be working fine.
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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