fueling issue?

I just had a ignition coil die, that....acted alot like you are describing.

I had done some changes, recently and only had 300 or so miles on the changes....

(changed intake manifolds....fuel pump, oil pan gasket, valve cover gaskets, ect.)

And based on how it would crank....although hard when hot....it would run till 190* or so and then start stalling and stumbling...and I would have to feather the pedal to keep it running.
I have a fuel pressure gauge on my Holley 650 DP....and it was putting up less than 2 psi.
I believed the Heat Cross over was causing my intake to get too hot and boil my fuel.

I bought a square bore heat insulator gasket....and another set of intake gaskets...with block off tabs...changed it all out and it still did it.
I changed the ignition coil and, What do you know.....:burnout: :farao:
No more problems.