I'm trying to take my Shelby Lancer to SDAC 27. Of course the engine developed a knock at the end of April. I didn't have time or money to rebuild it before SDAC comes around so I pulled it out and installed a known good, running, no issues bottom end from a 86 Shelby Charger along with a head from known good, running, no issues 91 Lebaron GTC.
I got everything cleaned up real nice and in stalled new seals. Nothing internally was touched. After getting this engine installed and started, dash gauge showed no oil pressure so I shut it off and then verified the sending unit was hooked up. So I hooked up a mechanical gauge, again no pressure.
I primed and installed a new oil pump I had kicking around. I pulled the spark plugs and had some one watch the gauge while cranking. No pressure.
I've blown air through the turbo oil feed line and there are air bubbles coming from around the lifters and with the threaded part that the oil filter threads onto removed air out of there too. The last place there is fresh oil is in the block where the threaded oil filer check valve goes. The check valve is not stuck.
I thought maybe I had gotten the wrong or a defective oil filter so I installed the old one. No pressure.
With the oil filter off, oil is flowing from the pump out of the block.
I don't see how there can be absolutely no oil pressure with out a large leak.
Am I missing something real stupid? Thanks for any and all help!