Where can I tap for oil pressure?

[evilmiata]

Update: I removed the oil-in line at the filter and spun the oil pump with a drill. There's oil and lots of it! Oil also flows out of the filter when I remove the oil-out line. So why can't I get oil pressure?

Does anyone have a diagram of the oil system?

How does the valve train recieve oil? Should I see oil feed into the valves if I remove the cover and spin the oil pump?

[evilmiata]

Here's a better question: Do I need an oil bypass valve? Originally there was an oil filter adapter that had the bypass valve in it, but I don't have the adapter. Would this explain my low oil pressure?

Please help me guys, because I need to drop the whole drivetrain to get the motor out and I'd like to leave that as teh last option.

[1988GTU]

Did you check to make sure the cam gear is not sheared off/worn down?

[evilmiata]

I imagine the cam gear is fine. The oil pump drive that replaces the distributor is used but the gears look fine. This is a new GM performance parts engine. However, I did replace all the hardware with ARP stuff so my main concerns are that I somehow improperly installed a bearing or the oil bypass valve is required. Its a big deal to do replace/repair either one (i.e., I'd have to track down an oil filter adapter or remove the whole drivetrain) so I'm trying to avoid any unnecessary work.