Fuel injection Holley
A couple of things to file away in the old brain for possible future use.
The I-6 4 liter with the MPI. Keeps the fuel rail under pressure, when the motor is stopped, to make restarting easier. The fuel shutoff valve/regulator (when it gets a little old), often leaks down some, which makes starting a little harder. This is often magnified when the battery is a little weak or the ignition system is in need of attention.
Next is the starter, when it gets a little old (and the brushes wear down some) it will often turn over a little slower. A weak battery and or a motor in need of a tune up, will add to the problem of excessive cranking. The I-6 will rarley start on the first revolution or often even the sixth revolution, seems to be the nature of the beast
If you ever go to start and the starter does nothing, wack the end of the starter sharply a few times with a hammer. This seats the brushes and can help with a hanging solenoid. Before the starter stops cranking altogether, it will often crank a little slower than normal, even with a good battery and charging system.