Wrencher88,
If you're talking about my engine pic's, my oil pressure gauge WAS hooked up to that fitting, but that is a bad place to hook it up because there isn't much pressure there.... that hole is now plugged.
I don't know what that hole is for. Maybe you have a secondary/parallel oil circuit to the rockers? I don't think that was stock... interesting.
Last edited by Norcal Dave; 05/05/2017 12:12 AM.
