Hey folks, having an interesting issue with a setup I just put together, and seem to be having an issue with the fuel system. The car when cold runs and starts fine, fuel PSI is sitting good at 4.5psi. As the engine warms, the pressure falls until it goose-eggs and the engine starves and dies. Was hoping it was just a pump that died from sitting, however a pump swap had the same results. Idled fine for about 4-5 minutes and the pressure slowly fell off again until it died. I'm inclined to drop the tank as it's the only thing that is more than 2 years old. Any other places to look or suggestions before I crack the thing open?
Engine is a 440, all iron, mild cam. Pump is mechanical.