I have a problem with my Holley 600 (4160)

It sounds lean in the cruise definately... You can try looking at your exh headers/manifolds at night... Have your friend hold the brakes and rev it in gear until it starts to break up... You should see the exh headers turn bright red... Also, lean idle mixtures and retarded initial timing can cause hard re-starts like that. It's not the fuel boiling away. It's just not getting enough. I would say jet up to 70s, then add 5° initial timing, reset the idle speed, and reset the mixture. Balance the mixture screws so they are out the same amount and the engine idles smoothly. Then back them out another 1/2 turn. See if those basic changes help.