Join Date: Nov 1999
Location: Central California, USA
None of the above.
The .140" hole is drilled in the center bore of the #1 outlet fitting. Don't drill anything else.
This is a carefully engineered flow and pressure control valve.
Don't mess with removing the washer under the "nut" in #2, some have two washers and removing one will boost pressure, but yours has only one allready and may have enough pressure as-is.
Check my web page for First Gen Camaro suspension info:
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67 RS 327 original owner. 1965 Lola T-70