65 Barracuda daily driver

I finally got my transmission back from the rebuilder! It took almost two months instead of the 2 weeks that I was told initially. Over the weekend I painted the pulleys, harmonic balancer and motor mounts. I still need to pain the block and exhaust manifolds etc and put it all back together and then install the torque converter and bolt the transmission to the engine. And assemble the Edelbrock 1406 - it's already taken apart and soaked and had air blown through. I decided to just go ahead and pull the slant. I haven't yet, but I think it makes more sense to troubleshoot when the desired engine is in. The car isn't really driveable anyways. Just to test it, I started it and just let it sit idling. After 12 minutes (!) the engine stalled. It seems the problem is getting worse. I'm tired of it.

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